Thanks to Smurfe and Maui for the help on this one!
After another search on Google I finally found the solution to my problem. I also forgot to mention that my two desktops are running XP Home and the laptop is running XP Pro.
Bottom line is that XP Home has issues and I would suggest to anyone that is thinking about buying a new computer to spend the extra cash and get XP Pro instead of XP Home as it is worth it.
Here is the solution to allow access from the network:
Note: I copied and pasted the command lines below as trying to type them in wasn't working!
amespace prefix = o ns = "urn
chemas-microsoft-com:office:office" /><?:NAMESPACE PREFIX = O /><?:NAMESPACE PREFIX = O /><O:P></O:P>
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If you have win xp home edition, this is the only way to get over the problem as the local settings & security policy are not available in Administration Tools.
As far as I know, user rights policies applies to WinXP Home as well, you just don't have a builtin GUI tool to see/change them.
You should be able to set/remove those privileges with the Windows 2003 resource kit command line tool ntrights.exe.
Ntrights.exe is in the free Win2k3 resource kit:
Windows Server 2003 Resource Kit Tools
The kit will install on WinXP or later.
After installation, click on: Start, All Programs, Windows Resource Kit Tools, Command Shell
Then enter the following commands. (Attention: they are case sensitive.) Copy and Paste as it is easier
net user guest /active:yes
ntrights +r SeNetworkLogonRight -u Guest
ntrights -r SeDenyNetworkLogonRight -u Guest
The first command enables network access for Guest, the two subsequent ones change two different policies to allow network access for Guest.
Note: run the application on the computer the resources of which you are not able to access.<O:P></O:P>