While I use a Mac I also have parrallels and have explored a few PC only options.
divinglog.de - works on any internet connected system, anywhere in the world (Mac, PC, Andriod, iPhone etc). Free and seems pretty good
Subsurface - works on any desktop system - free - pulls data from divinglog and has a few more advanced feature sets
Diving Log - PC only - $35 - Probably the most feature rich of the group
Diving Log - Mobile App - $varies - syncs with Diving Log PC (and Macdive but thinking you don't care about that) - on the go dive log creation with icloud backup (I don't have the andriod version so not sure how it syncs/back-up)
SB Logbook - Free - All internet enabled devices - haven't tried it out to be honest
Personally I am liking Diving log on mobile coupled to MacDive (so Diving log PC in your case), lets me use something small with the details are fresh then have a full featured companion for later if I really want to tweak things. I also keep a paper log. I'm sure the more experienced divers will chime in here, all I can say is expirement and find what works for you as most of the options are free or atleast have trials.