Switching Users with a Script?

Hello :)

This is related to my previous question, but I thought it enough of a difference to warrant its own question...

Is it possible in Windows XP to switch between users with a script or batch file (using XP fast user switching) and not log out the first user?

For example:

1) User A logs in.
2) During User A startup, Script runs
3) Script does a 'fast user switch' to login User B, but does not log out User A so that User A programs continue to run in background...

Thanks!

PA :)