Cisco 2621 VLAN PXE boot setup

I have a Cisco 2621 router with several VLAN's setup on it.  I have ZERO experience with Cisco routers or VLAN's.  Currently VLAN2 has an IP helper address that points to our current PXE server.  As far as I can tell, this is the only place this is setup on the router.

I am trying to change the PXE server to a different IP address and add a bootfile name as well.  What would the commands be on the router to do this?  Do I need to delete the IP Helper address and add the PXE server and Bootfile?

The box we are trying to install is a KBOX from KACE for imaging.  They have told us these two options are 66 and 67, if that helps at all.  Here is the configuration.

Current configuration : 4089 bytes 
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! Last configuration change at 13:51:15 MST Tue Feb 9 2010 
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version 12.1 
no service pad 
service timestamps debug datetime localtime show-timezone 
service timestamps log datetime localtime show-timezone 
service password-encryption 
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hostname DO-C3550-12T-MDF312-07 
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logging buffered warnings 
no logging console 
no logging monitor 
enable secret 5 $1$sAeA$7T8HUcoESlznjeXDgYUz60 
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clock timezone MST -7 
ip subnet-zero 
ip routing 
ip dhcp excluded-address 172.18.5.1 172.18.5.40 
ip dhcp excluded-address 172.18.5.4 
ip dhcp excluded-address 172.18.5.254 
ip dhcp excluded-address 172.18.5.113 
! 
ip dhcp pool CCUSD-DO 
   network 172.18.5.0 255.255.255.0 
   default-router 172.18.5.1 
   domain-name CCUSD.Local 
   dns-server 172.18.5.10 
   lease 0 4 
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no ip domain-lookup 
ip name-server 63.225.234.4 
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spanning-tree mode pvst 
spanning-tree extend system-id 
! 
! 
! 
interface Port-channel1 
 switchport access vlan 2 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/1 
 switchport access vlan 2 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/2 
 switchport access vlan 2 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/3 
 switchport access vlan 2 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/4 
 switchport access vlan 2 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/5 
 switchport access vlan 2 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/6 
 switchport access vlan 2 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/7 
 switchport access vlan 2 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/8 
 switchport access vlan 5 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/9 
 switchport access vlan 5 
 switchport mode access 
 switchport nonegotiate 
! 
interface GigabitEthernet0/10 
 switchport access vlan 5 
 switchport trunk encapsulation dot1q 
 switchport mode trunk 
 switchport nonegotiate 
 duplex full 
 speed 100 
! 
interface GigabitEthernet0/11 
 switchport trunk encapsulation dot1q 
 switchport mode trunk 
! 
interface GigabitEthernet0/12 
 description "Connection to CCUSD-DO-Router1" 
 switchport trunk encapsulation dot1q 
 switchport mode trunk 
! 
interface Vlan1 
 description "CCUSD-Admin" 
 ip address 10.41.248.100 255.255.255.0 
 no ip redirects 
 no ip mroute-cache 
! 
interface Vlan2 
 description "CCUSD-DO-Data" 
 ip address 172.18.5.1 255.255.255.0 
 ip helper-address 172.19.5.2 
 no ip redirects 
 ip route-cache policy 
! 
interface Vlan3 
 description "CCUSD-DO-Voice" 
 ip address 172.18.10.4 255.255.255.0 
 no ip redirects 
! 
interface Vlan41 
 description "CCUSD-WAN" 
 ip address 10.41.42.1 255.255.255.0 
 no ip redirects 
! 
interface Vlan52 
 description "CCUSD-DO-Internet" 
 ip address 192.168.2.2 255.255.255.0 
 no ip redirects 
! 
router eigrp 100 
 redistribute static 
 network 10.41.42.0 0.0.0.255 
 network 10.41.248.0 0.0.0.255 
 network 172.18.5.0 0.0.0.255 
 network 172.18.10.0 0.0.0.255 
 network 192.168.2.0 
 no auto-summary 
 no eigrp log-neighbor-changes 
! 
ip local policy route-map DO 
ip default-gateway 10.41.248.1 
ip classless 
ip route 0.0.0.0 0.0.0.0 10.41.42.2 
ip route 10.30.20.0 255.255.255.0 10.41.42.3 
ip route 172.30.10.0 255.255.255.0 10.41.42.3 
ip http server 
ip http port 8888 
! 
! 
access-list 110 deny   ip 172.18.0.0 0.0.255.255 10.41.248.0 0.0.0.255 
access-list 110 deny   ip 172.18.0.0 0.0.255.255 10.41.42.0 0.0.0.255 
access-list 110 deny   ip 172.18.0.0 0.0.255.255 172.18.0.0 0.0.255.255 
access-list 110 deny   ip 172.18.0.0 0.0.255.255 172.19.0.0 0.0.255.255 
access-list 110 deny   ip 172.18.0.0 0.0.255.255 172.30.0.0 0.0.255.255 
access-list 110 deny   ip 172.18.0.0 0.0.255.255 host 10.41.41.1 
snmp-server community public RO 
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line con 0 
 password 7 107F282306181E0803087E3E 
 logging synchronous 
 login 
line vty 0 4 
 password 7 073E00764D061506181E5F19 
 login 
line vty 5 15 
 password 7 073E00764D061506181E5F19 
 login 
! 
ntp clock-period 17180181 
ntp server 192.5.41.41 prefer 
ntp server 192.5.41.40 
end

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