I have read that you can do application sharing in Skype and MS Messenger, what I didn’t know before actually after in computer science field for 10 years. I gave Skype a try and installed it. I havent tried MS Messenger yet.
Skype is doing the application sharing through the extra Unyte. First I had to create another account on Skype, install another copy of Windows XP in a virtual machine on my VMWare Server and install Skype also on the virtualized XP machine. I installed this extra and tried running it, but kept getting an error. It kept telling me to enable the firewall for SkypePM.exe to access the Internet. This however I later found out after searching the Internet for a solution that it had nothing to do with access to the Internet. I found out that actually its because I have to pay for this service. They could have made this more clear.
I now would install the Chisimba Realtime Tools and try the application sharing in Ubuntu Linux. I had a reply from David at UWC that the Realtime Tools actually support application sharing.