My Sony Cyber-Shot

I own a Sony Cyber-shot DSC-h10 Digital camera for about three years now and enyoit it a lot, but, the zomm for this camera is not as good as i would like (is 10x optical zomm and 2x digital zoom). I've been looking if the is a stronger lens to put in my camera and if it would be better to buy a new one or replace the lens if i could find it.

I've been in this quest for too long  ansd i need answers from you guys desperately.