Many thanks for the feedback.
@ Foen - I did take a look at the screenshot for the Fantasy Grounds II expansion and it looked absolutely excellent. I didn't know that there was already an exiting add-on that could be download, I thought that it was perhaps something that RobP had created himself.
I agree with you regarding the disadvantages though. The fact that it costs a bit, while not a complete dealbreaker, is a bit of a negative. The major factor though is that it looks hellishly complicated and I'd rather spend my time roleplaying than programming.
@ CosmicGamer - I am in total agreement with you. I was really looking for something pretty basic, just a diceroller, a chat program and something a little better than a whiteboard for showing positions when necessary.
One of the main reasons why I love Traveller so much is that the possibilities are endless and I could quite happily play games without any combat at all. So the vast majority of times, maps etc. would not be necessary. But for combat, I think it would help for everyone to see where their characters are meant to be.
I spent a few hours researching possibilities last night. For anyone who is interested there is a very comprehensive list of all of the Virtual Tabletop programs at:
http://www.battlegroundsgames.com/links.html
Many of them either seem to have been abandoned or else they are just as complicated as Fantasy Grounds 2. I did find one that I liked though, which is called Gametable:
http://sourceforge.net/projects/gametable/
All of the basics seem to be there without so many options available that I didn't know where to start and it's even more simple for players as there really isn't that much that they need to know apart from dragging their icon around and rolling their own dice.