Howdy space pirates!
While checking the thousands of backlinks to this website I found two great (and pretty lengthy) storys that play in the I-War universe:
Circles- an I-War/Babylon 5 crossover, written by PhoenixDfire
Unintended Consequences - an I-War/Battlestar Galactica crossover, written by PhantomVX2000.
Click on the titles if you fancy a good read.
It's amazing to see how strong this community is still going, given the age of the I-War games. Spread out the word, guys! :-)