Setting up an Home System with LUA Users

Archived from groups: microsoft.public.windowsxp.security_admin (More info?)

I'm going to setup my XP PRO-based PC.
We are 3 users, just me as administrator.

I'd like to keep the others 2 users as "Normal Users" (no Admin rights).

My questions are:
1) What user do I use to install software ? I suppose to login as local
Administrator
and setup everything. Is it the right way ?
2) As some buggy software doesn't work as "restricted user", I think to
setup another local administrator (without Interactive Logon right) and put
shortcuts on users desktop to run those software as the newly created
administrator.
The "dirty" thing is give an "administrator" password to other 2 users...

Thanks,
Igor