Having just visited the corporate head quarters of an international telemarketing firm, the software they used impressed me.

The one package was called Ship-It which allows the scheduling of remote installs.

I can't quite recall the name of the other package for remote administration and surveillance but i believe the acronym was AMO. Assets Management Options I believe.

Both programs had excellent interfacing and were quite efficient, available from Computer Associates

The company I was at was managing 8000 workstations world wide, from the US to the UK to the Phillipines.