Ping problem... over wireless

Two XP Pro machines on a peer to peer network - trying to access printer from both computers but can only do so from Computer B.

ALL connections below are wired except between for wirelesss connection between Wireless Access Point and Netgear:

Sonicwall Router/Firewall----Wireless Access Point<        >NetgearWireless print server----Computer B
         |                                                                                                       |
         |                                                                                                       |
Computer A                                                                                      Printer (with NIC)

Computer B can ping Computer A, SonicWall, WAP, Netgear and Printer
Computer A can ping Computer B, SonicWall, WAP, Netgear... but not the printer.

Computer B, SonicWall, WAP, Netgear and printer all have static IPs.

Any ideas why Computer A cannot ping B -  are most welcome.
Tomster2Asked:
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skaap2kCommented:
Are all the devices on the same subnet?

if not, does the printer have the relevant default gateway assigned to it?

How does computer B connect to the network? directly to the access point?

RN
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Tomster2Author Commented:
All on the same subnet

Printer has correct default gateway

Computer B has a wired connection to the  NetGear  (WPGS606 - this is a wireless print server that also has 4 RJ45 ports - designed to connect printers and pcs via wireless to the main network.
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skaap2kCommented:
Check that Computer B has it's firewall disabled...
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Tomster2Author Commented:
Yep it is... and Computer A can ping it... and vice versa.

The printer also has a wired connection to the netgear... but it cannot be pinged by Computer A
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skaap2kCommented:
Ok,

on each computer, ping each of the other devices, then type this from the command prompt on each:

arp -a

then paste it here :)
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Tomster2Author Commented:
We ended up using the USB connection to the PC and sharing it.  So never got to try your suggestion.

I appreciate your responding so giving you the points anyway.
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