VPN tunneling on linksys where there is no static ip for client

OK Experts, can this be solved?

I have a Linksys RV082 VPN Router that claims to have the ability to create
50 VPN tunnels. I want to create a tunnel for an offsite laptop to
communicate through the tunnel and work on line utilizing Windows 2K or XP
on the offsite laptop.

XP and Windows 2K have an internal component called IPSEC that you can use
as the "client" to connect to the VPN router. It requires a static IP in
order to work. In the setup for the router, there is a selection for a
dynamic IP with email authentication. You must select that. No one in
Linksys can tell me how to make it work. No one can tell me if it has ever
been tested.

I have found a VBS script on the Internet that someone uses to make the
connection. It reads the dynamic IP and goes into IPSEC and enters it as a
static IP and then queries the router. There is a problem in the script.
(script attached as a text file). When you click on it, you get an error
message.  

the script i found:
lanAddress = GetLANAddress()

if trim(lanAddress) = "" then
set shell = createobject("wscriptshell")

'Set up the connection Make sure you change the 666.666.666.666 to the correct server side IP.
shell.run """ipseccmd"" -f 192.168.1.*=0 -t " & lanAddress & " -1s 3DES-SHA-2 -n ESP[3DES,SHA]480SP1NPASS -1p -a P:""vpn!!!medex7"" -w reg -p WORK -r servertome -x",0,1
shell.run """ipseccmd"" -f 0=192.168.1.* -t 199.227.120.242 -1s 3DES-SHA-2 -n ESP[3DES,SHA]480SP1INPASS -1p -a P:""vpn!!!medex7"" -w reg -p WORK -r metosever -x",0,1

'Ping the VPN server's internal ip address
shell.run "ping 192.168.1.1"0,1

set shell = nothing
msgbox "VPN setup complete"
else
msgbox "Unable to set up VPN security policy" & vbCr & "Unable to determine IP address" & vbCr & "Please verify that your dial-up connection is established"
end if

Function GetLANAddress()

LANFound = False

set sh = createobject("wscript.shell")
set fso = createobject("scripting.filesystemobject")

Set Env = sh.Environment("PROCESS")

if ENV("OS") =Windows_NT" then
workfile = fso.gettempname
sh.run "%comspec% /c ipconfig > "& workfile,0,true
else
msgbox "This script is intended to run on NT/2K/XP only"
end if

set sh = nothing
set ts = fso.opentextfile(workfile)
data = split(ts.readall,vbcrif)
ts.close
set ts = nothing
fso.delete workfile
set fso = nothing

for n = 0 to unbound(data)
if LANFound then
if instr(data(n),"IP Address") then
parts = split(data(n),":")
GETLANAddress = trim(cstr(parts(1)))
msgbox GetLANAddress
Exit For
end if
else
if instr(lcase(data(n)),"ethernet adapter local area connection:") then LANFound = True
end if
next
End Function