If your uncomfortable with doing it yourself
Or even if you are comfortable with it, I enjoy this free tool
==Download and install
Windows CleanUp! 4.5.1Here's my typical instructions
==Open
Cleanup! by double-clicking the icon on your desktop (or from the Start > All Programs menu).
Set the program up as follows:
Click "Options..."
Move the arrow down to "Custom CleanUp!"
Put a check next to the following (Make sure nothing else is checked!):
* Empty Recycle Bins
* Delete Cookies
* Delete Prefetch files
* Cleanup! All Users
Click OK
Press the CleanUp! button to start the program.
When it's done>>Click Close
Afterwards, just don't log off and back on, but reboot the computer
NOTE: The above is using a Custom Cleanup
Personally, I have not saved no jobs I've done in a temp location or extension
If you feel comfortable that you have not also, as most do
Have cleanup do a Standard cleanup
Hold onto CleanUp!, it's yours for free
Run it every couple of weeks