This is my first real time strategy game...and i really enjoy it, i find it very addictive..could anyone reccomend any other similar RTS games i should try out?

Well, if I were you, which I'm not, I would try out the Empire Earth series, although if you're looking for something close to this series, I'd go for the former. The newer one doesn't exactly work in the way the old one did, but it has it's own perks.

Also, Darwinia is supposed to be good, but that's not my opinion.