Remote Control without Novell Client

[glemarec]

Hi,
Engineering phase on a large network (50,000 WKS)
XP SP3 Workstations, Workgroup mode, No Novell Client, NSL is Gina, full ZFD7 Agent in a middle-tier architecture, imported in e-directory.
Looking for a remote-control tool for help-desk actors from workstations without a Novell Client.
Tried Zenbrowser (no possibilities ithout novell client) or RCConsole (in password mode, it's tough to take in place with a large number of remote workstations).
Any idea about other solutions ?

Thanks in advance.

YM