[3SidedSquare]

Can you give us a little more info?
I'm assuming you're running windows, what version?
Post any other restriction-ey things
Have you tried getting around it?

• Download, and attempt to execute a .jar
  
• Do you have access to cmd.exe, or command.com? Elevated or non-elevated?(Can you create new accounts?)
  
• Are you able to execute .fla, or .swf?
  
• Do you have access to task manager? Elevated or non-elevated?(Can you kill and re-start exporer.exe?)
  
• Do you need the password to use the install wizard, or to execute any .exe?
  

Anyway, your best bet would be Cain and Able or some form of keylogger like Dark Comet or Cyber Gate

Please post more info.