Vista - Vista & XP Home File Sharing

I have a new DELL XPS Laptop running Vista 64 bit Home Premium, and I'm able to connect to my ATT wireless okay and do email, browse, etc, but I'm having issues getting the file sharing to work. Seems I cannot view my workgroup computers. My wireless in built into the ATT modem which is a 2WIRE brand. I've called ATT support and they cannot fix it, I've configured the 2WIRE firewall for the laptop, still no go...

One thing I am getting when I try to click on, view workgroups in XP, is that it tells me workgroup is not accessible, and that I may not have permission to use this resource. Contact administrator...Well, I am the administrator. So I'm trying set the permissions again in my network but cannot find out how to get there. Also the laptop cannot see the main computer either.

Any ideas on this, and has anyone had the same problems when trying to file share Vista with XP? I had no problems when networking both my XP systems.

Summary: I can browse and do email from my new laptop going through the wireless connection, yet the ping test fails, and I cannot file share. Baffling isn't it?

Thanks

First off, I did follow all step by step instructions for setting Windows Vista Home Premium 64 bit system, everything good...

I'm still hammering away here. And seemed to have found the problem...My AVG security systems was blocking me out. I went to the help section of AVG support online and I am attaching the link. Read carefully and follow the instructions. This again, is jus for AVG anti-virus users...I've been at this a week now off & on. There were some other minor issues, but after going through all the Vista checks, & XP I knew I had those correct.

Heres the link: AVG Antivirus and Security Software - FAQ

Also noteworthy is that if you are using ATT modem with built in 2WIRE819 router you ill also have to go in there and configure the network settings, plus all the other normal file sharing permissions...

Hope this will help.

http://www.avg.com/faq.keyw-network#tba5
Go to this link if you are using AVG internet Security:

#815, Open this link and follow instructions...Fixed my Vista & XP file sharing issues. Also did a ping test to verify.

TIP: If you have bellsouth ISP with an internal 2WIRE819 remote router you will also have to configure that as well, and of course set up you selected files for sharing, also set permissions...

Worked for me. Good Luck!

RB