Lost printer sharing after adding WRT160N; Vista home, XP on wireless network

Help please..Need to get printer connection lost when FIOS Actiontec router wireless G replaced with WRT160N.
All worked fine 3 months ago; Printer hardwired to Vista desktop; router was Linksys WRT160N, my XP laptop could connect wirelessly to that printer.
-then, switched from RCN broadband to Verizon FIOS; modem replaced by Actiontec wireless G router for internet and tv, losing the Linksys. I was still able to use the Actiontec's G signal to find the printer through the network; so, still OK.  But Not happy with G speed;
- so daisychained the Linksys as secondary hardwired to the Actiontec to act as an access point for wireless, shutting off the Actiontec wireless signal.  Worked great for N internet connection; but now cannot connect to printer. 
Coincidentally, a different printer/fax machine replaced the original printer; Aficio brand.  No drivers were added to the other pc's for this printer. 
Third change; security went from WEP to WPA2-AES. 
Net result; my XP pc's can still connect to router and internet; but cannot install the new printer completely.
my XP laptop shows the printer, but gets error "spooling service not running".  an XP desktop doesn't even show the printer when browsing to add printers; it gets stuck at error "cannot add a printer not in the trusted network".  Named all computers as WORKGROUP and did the windows network set-up.  I also have McAfee antivirus on the Vista home pc; but have Norton Symantec from Comcast (long story!) on the 2 XP pc's; so I cannot fully identify and manage the three pc;'s on the network.
my ideas;
1. change WPA2-AES back to WEP; just to see.
2. could put McAfee on all three pc's, if that would help.  rather not, i prefer the Symantec.
3. try to configure so that all devices are identified clearly on the network, and managed.
4. ? try to load drivers for the printer, onto the XP's.  Maybe easiest to do this by hardwiring them directly to the new printer.
any suggestions?
thanks, pdoyle

How you have connected this both the routers to each other?
LAN - to - LAN
or
LAN - to - WAN ?
Is your Printer is connected to the Actiontec router or is it connected to the Linksys Router?

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