Heh, I've head a genine P-133 with an ATI Rage (pro!) graph card from 1997. to 2005. - and now I'm a proud owner of a PIII-9...something Mhz with a GF 2 graph card. Yey! :)

Chek out "Fighting Steel" it's a WW2 battleship game with a cranking dynamic campaign engine, but there are mods...

Chek out www.subsim.com - it's not just about the sub sims, also a storehouse of just about every patch and mod available for modern naval sims.

As Silent Hunter 2 ran smoothly even on my old P-133 (with the graphics shot in the head) it should run fine on youer comp. But the missinos are scripted, no dynamic camp i'm afraid. Many huge fan made mods for the game - fun for the whole family!

Chek out Dangerous Waters and that sequel to Jane's FC for a real challenge!

Also, might try out Age of Sail 2 for some intense ship of the line duels, but the game does it's thing only in instant action and single missions - the campaign is utter crap. Can't beat the game's representation of the trafalgar battle, though... but that's just my Nelson fetish again! :)

Good hunting - and keep a watch for those torpedo trails, eh? ;)