Copied from another site...
You can use the activesync remote display
http://www.microsoft.com/technet/pro...ctoys.mspx#ELD
Download/run the .exe on your pc.
Basically, all you need to do is copy the two files in "C:\Program Files\Windows Mobile Developer Power Toys\ActiveSync_Remote_Display\devices\wce400\armv 4t" to the \WINDOWS directory on your WM5.0 device using ActiveSync.
When you fire up the shortcut for ActiveSync Remote Display on your PC, it complains that "The OS or CPU of this device is unknown to this application" - just click OK and your WM5.0 display will appear in the main window!!!! The first time that you start and stop the remote display, your phone/device will give you the "This program is from an unknown publisher...." message, so just say Yes and it won't ask you again.
The only caveat is that you seem to get the remote display icon (windows logo in a circle) in the notification area (where the battery and screen rotation icons are) one position to the left each time you stop and start the remote display. No big deal, but can look a bit weird after you've stopped/started about ten times
F1 = Left Soft Key
F2 = Right Soft Key
F3 = Green Button
F4 = Red Button
F6 = Volume Up
F7 = Volume Down
Windows Button/Start Button = Home (Although it brings up start menu on pc)
Enjoy!