ok....
so whats happening when you go to my network palaces and then under my work group computers...is it detecting any computers or is it blank..if u see the computers just click on it and see if it see the shared folders and files...
what you can do is go check if any firewall is blocing the new sharing setup,,,
do this in both the computers,
click on run,type in cmd hit enter and then in the black box type in ipconfig and hit enter make a note of the ip address from both the computers,now the ip address from the 1st computer needs to be pinged from the 2nd computer and the ip address from the from 2nd computer needs to be pinged from the 1st computer.
how to ping,click on start,run type in cmd and hit enternet and the black box type in ping and then give a space adn then type in the ip adress (eg shud b like this ping 192.168.1.101) and hit enter if u get request timed out then there is a firewall blocking,if the ping is successfull we need to check other settings...
do this and let me know...
vedhick