Great news with the graphics - the problems with PDFs is that they're already compressed within the program so RAR / ZIP / ACE etc doesn't compress them more than a few KBs.
The issues are obviously different sizes the magazine when first produced was a lot bigger than when it finished so the first lot are 30+MB and some are 15MB.
All in all (megatapes included) theres 2.8GB of Zzap magazines.
The way I was going to do it was have folders Zzap 001 to ZZap 030 and then obviously when you click the button it just opens that folder (I hope)...
I'll work something out soon - lol