I tried some trick I found on the Palm help forums to get the Palm desktop software installed. It didn't work, and now I can't install anything.
Here's what I did:
I get that install problem with a lot of programs, here's how I get around it:
Go to Start>Settings>Control Panel>Administrative Tools>Services
Scroll down to Windows Installer, double click it. Select the text in the
"Path to Executible" field (Probably: C:\WINDOWS\System32\msiexec.exe /V)
Click Start>Run. Enter Regedit, click ok.
Paste in the text from the Services panel.
When you get to that entry in your registry, change the location to:
Close regedit. Go back to the Services pane, reopen Windows Installer. It
should now show the new location. Stop and restart the service.
Now install from the Palm CD, all should be well. The next time you get this
problem, go back through the same procedure but change the location back to
the old one (C:\WINDOWS\System32\msiexec.exe /V)
Now neither of those works for any software.