The PythonCard MSI installer fails at the post-install stage and no start menu items get created. To use the PythonCard tools you need to create the shortcuts manually.
Checking the mailing list, this happened a few years ago when Python 2.4 was released. It looks like the installer needs updating
The above was with Windows XP.
Under Vista Business before the files are copied there are 3 errors regarding not being able to create or set a registry key (permissions?) and the following error at the end:
*** run_installscript: internal error 0xFFFFFFF ***
No program shortcuts, etc. are created.
If I'd bothered to check issue 1807268 I would have discovered that using the "Run As Administrator" option on the installer fixes the problems on Vista and I can apparently run all of the editors from the start menu.