Accessed Denied on shared files in a network

I've read and read and it seems like there are alot of accessed denied
problems but none like mine. I have 2 laptops with Vista on them. I can
network them and I can see both computers and the C: drives but I can not
open the drive on the opposite computer through the network. I get that damn
access denied message. I have disabled the UAC and I set up the hidden
administrator account but none of it seems to work. Am I just doomed to not
be able to share folders??? Oh yeah all of my folders are shared too....
Also I can not download Office Pro 2007 from the microsoft website... Don't
know if that is related or not. It will not allow me to bring up the download
file.
Any suggestions???
Thanks for your help!