A way to share desktop screen

[madfrenzy]

Hi all,
I was wondering if there is a program that can connect with windows net meeting to share desktop with windows users, I heard that egika can connect and share desktops as I'm an instructor and would like to share my screen with the students in the Lab (all of the Pcs in it have windows xp only).
if there isn't any, is there other program that is installable on both windows and linux and can share the desktop??

[BDNiner]

Ekiga works with both windows and linux. There is a windows client now.

[madfrenzy]

ok I installed it but cant share the desktop, is there any other programs??