Hey guys! Just want to write this down for future assistance to others having the typical problem when sharing folders within a network with WinXP pro. So you shared your folder and you go to the other computer and you can see the other computer in the Group but when you want to access the other computer to view the shared folder you get the dreaded message: "You may not have permission to use this network resource. Please contact your network administration" Well, after trying a bunch of fixes, I found out a simple one which many people skips in the 1st boot of WinXP (in my case, in the 1st boot of XP I skip the network connection wizard and inmediatly go to "folder options" and disable/enable advanced folder views, like hidden, system, file extensions, SIMPLE FILE SHARING... sigh if I had known... So I had "Complex" file sharing in my PC and I granted all the rights to all the users, yet I couldnt access folders from other PCs into the same Workgroup. After trying many many fixes, I decided to try this: Go to Mi PC, then "tools", folder options, and enable "SIMPLE FILE SHARING" (yes, the one I disabled in the 1st boot of XP) Grrrrrrrr. After you have Simple File Sharing enabled, go to the folder you have shared and you will see the option that was preventing the access from the other computer!! Apparently This option is only visible with "simple file sharing". The option says: "File sharing have been disabled for your safety...enable file sharing using the network connection wizard. or enable file sharing without the network connection wizard". Obviously you will choose the second option "enable file sharing without using the connection wizard". then you select again "only/just enable file sharing". and after you do that, click OK and the "share now" option will come up, and after you click it, click OK to exit folder properties and you will be able to access the computer/folders. As other fixes, you may want to Install the NETBIOS protocol in network connections and choose "NETbios over TCP/IP" in advanced properties of the TCP/IP protocol as well. And make sure that in the advanced windows firewall options the "file sharing/printers" is checked as "exceptions". Well I hope this helps others. Cheers all!