I wasn't a Cyberstriker myself, but it's interesting to see that the game survived until at least 2004 -- the magazine ad that inspired my post was from the early 1990s, so that's impressive longevity for an online game.
Anyway, I can't help this person out, but if the handle KillerDoGG rings a bell with you from Cyberstrikes of yore, he invites you to drop him a line at email@example.com:
Hi i am trying very hard to contact my old friends from cyberstrike days 1996 till 2004. If you have any old contacts from then till now it would mean a great deal to me. you could sinply drop the name KillerDoGG and my email on your blog and i would be grateful.