Remote Regedit - Ron Crumbaker's Web Remote Tool
[Edit] Unfortunately, the new(er) regedit.exe, I never could find a way to script that to immediately connect to a remote computer. But grab a copy of regedt32.exe from \system32. Copy that into your <smsserver>\remote$ share.
Edit MachRest.asp, and add a button by your other buttons (about line 80-ish):
<INPUT id="Button723" style='WIDTH: 180px' type='button' value='Regedit' name='Btnl723'>
Then copy/paste the attached information (the Sub) probably near the bottom, just before the </script>, after all of the other SUB/end Sub routines.
If someone does know how to script regedit to remotely connect to a computer let me know!