Can't connect to workgroup from laptop! ARRRG!

[lovesranch]

Hey all,
Hope everyones having a good holiday weekend! Mines been good except for this! I just got a new Lenovo (IBM Thinkpad) laptop and it's awesome! I also just got my daughter a new PC for her birthday and she's jazzed too. O.K. now for the fun part. I've hooked up my wireless network with a new Linksys WRT54G router and a Linksys WUSB54GSC USB Adaptor. I had some difficulty getting that all to connect along with my Laptop but called I Linksys tech support and they were GREAT! That guy was on the phone for over an hour with me and then thanked ME for being patient! Anyway, now I can share my DSL Internet connection no problem, but I can't get my Laptop to see my "workgroup" for file and print sharing! It was a breeze on my daughters PC but for some reason the Laptop is being a Royal Pain the &$*%$(^%(!!
I could really use some help with this. Here's the rundown on whats-what:

Host PC- Desktop, WinXP Home, DSL modem, Linksys WRT54G Router.

Network PC- Desktop, WinVista Home, Linksys WUSB54GSC Adaptor.

Network PC- Laptop, WinXP Home, Atheros? 11 a/b/g Wireless LAN Mini PCIe Adaptor.

WEP encription.

I have run the "Network setup Wizard" on the Laptop and it said it was successful but if I go to "My Network Places" it only shows the router.

If I right click on "My Computer" on all 3 PC's and look at the computer name, they are all in the same workgroup.

If I go to "Network Connections" it shows;
NET Adaptor (connected), LAN (not connected). and Wireless (connected).

If I click "View Workgroup computers" I get an error message:
"Workgroup is not accessable. You might not have permission to use this network resource. Contact the adiministrator of this server to find out if you have access permissions. The list of servers for this workgroup is not currently available"

I don't know what to do next. Any help woud be greatly appreciated! Thanks.

[glc]

Run the network setup wizard on ALL computers and use the option for the computer is connected to the Internet through a home gateway. Uninstall ALL 3rd party firewalls and use the Windows firewall.

[lovesranch]

Thanks GLC,
I disabled Norton Firewall on the Laptop and now it see's the other PC's and the Printer on the Host PC. Thats a step in the right direction, but when I try to install the Printer to my Laptop, it says it can't find the driver! Do I have to use the CD from the printer or can I share the whole Host PC "C" drive so it will find the driver? If so how do I do that? I still have a few other problems. I can see the shared files that are on the WinVista PC but when I try to open some of them it says I don't have permission? I have also disabled the McCafee Firewall on that PC so that shouldn't be it.