Vista - No Network access - Access Denied

My internet connection works just fine, but the network connections icon on the taskbar (the two computers) is faded gray and has a red x on it, and when i put the cursor over it it reads "Connection status: unknown, Access denied"

i know this has been posted before but i couldnt find any solution that worked...

ive already done the cmd prompt solution, the "net localgroup administrators /add", but it does nothing...

i have Vista Home Basic 32bit, and im a standard user, though i have administrative rights.. and there are 3 users for the computer but i'm the only one with the problem..

if anyone knows of any other solution(s), please post them here!!