How do I network Laptop(wireless) to Desktop(Wierd)

The Laptop has "Windows 7 32-bit" and Desktop "Windows 7 64-bit", they are both connected through a Modem wireless and wired respectfully. They both are detected in a network, but they cannot be detected in a homegroup, and when i go to networks and click on the other computer it asks Network username and password. It is the same situation in both the computers. Both are detected in Modem home page, and i can ping the other computer IP. How can share things in both computer? Can anyone help?

Lots of help for this available via Google: windows 7 share homegroup

Look at some of them. Come back if you still have questions.

It all right and fine, but the other computer does not show up in the homegroup. It only shows in the Network computers, and even their when accessed, it asks for a Network password!

Did you look at any of the links from the Google page I posted?