"Silent Hunter: Commander's Edition" is still the most enjoyable subsim I've ever done. Its available for $10 on cd at CompUSA. I also have "Silent Hunter II" and did a couple of the training missions in it, but got distracted by "NASCAR Racing 2002 Season", "F1 2001" with the ALMS and Sports Car Pack mods with LeMans and Sebring tracks from rsdg.net, "Aces High" and now "Madden NFL 2002". I haven't really gone back to SH2 in awhile but the manual is still on my desk.