Hi guys i've just read 2 similar threads but not sure if it applies to my setup

The problem:
Tried to setup home network but failed miserably.

The gist:
Desktop Dell E521 connects to Telecom's Dlink with a LAN cable
Laptop Fujitsu lifebook connects to Telecom's Dlink via Wireless

Should there be a problem sharing files with this setup? When we go to 'My Network Places' we can see each other. But cannot ping or see shared files.

I thought the problem is that you can't have a network where one computer is wired and one is wireless. Any possible solutions? (By the way the Dlink wireless network name is different from what i am naming my home network but since we can see each other on network places i presume that is not the problem.)

Thanks gee*s *ahem!!* guys.