Vista - FILE & Printer Sharing???

I just bought a Toshiba Laptop and it is running VISTA!! I love it by the
way. My office computer is running XP. I have my Network up and running but
my laptop does not want to let me into my file and folders on my office
desktop. I can view my brothers computer which is also on my network. I got
my laptop to recognize my office computer about 1 hour ago. I somehow fixed
that but when I double click on it, it gives me an error and says access is
denied!! I did some trouble shooting and found that if you change all the
computers to the same workgroup name it will run better and faster but that
did not fix anything. Hope I can get some help here. Thanks!!!
Chris

File Sharing
http://www.microsoft.com/technet/net.../vista_fp.mspx

File Sharing Help
http://windowshelp.microsoft.com/Win...509051033.mspx

Network Location Types in Windows Vista
http://www.microsoft.com/technet/com...uy/cg0906.mspx

Router Test
http://www.microsoft.com/windows/usi...d/default.mspx
"CPlank" <CPlank@discussions.microsoft.com> wrote in message
news:26FEC6EE-0327-4907-9FFC-8D83BEC71770@microsoft.com...
>I just bought a Toshiba Laptop and it is running VISTA!! I love it by the
> way. My office computer is running XP. I have my Network up and running
> but
> my laptop does not want to let me into my file and folders on my office
> desktop. I can view my brothers computer which is also on my network. I
> got
> my laptop to recognize my office computer about 1 hour ago. I somehow
> fixed
> that but when I double click on it, it gives me an error and says access
> is
> denied!! I did some trouble shooting and found that if you change all the
> computers to the same workgroup name it will run better and faster but
> that
> did not fix anything. Hope I can get some help here. Thanks!!!
> Chris