Trouble sharing drives.

[Azureth]

I have 3 computers connected to my network. I have told my drives on all my computers to share, however, for some reason when I try to access my C drive with my other computers it asks for a username and password, and when I try to access another PC fit flat-out says it's inaccessible. Please help.

EDIT: The third one allows everything fine, it's on XP Home, the other 2 comps are Vista x64.

 

[Dangman]

Are you using a firewall?

Go to the Network and Sharing Center window, look in the the Sharing and Discovery section, and look for "Password Protected Sharing". Make sure that's turned off.

 

[Azureth]

Alright, I got it to where I can get all 3 computers to look in each other, however I can't get them to go in each others C drives, or share the same folders (eg I put a file in the "Public Documents" folder nothing is in it when I access it with my other PCs).