How do I unlock a pword protected .zip file without knowing the pword?

Hey guys, I recently downloaded a program off: softarchive.net, It looked very genuine as it was about 105MB in size. Only problem is when I try to unzip the files it comes up with a "enter pword" dialog. The only non-pword protected file was a .html file which leads me to this dodgy looking survey web site, stating that in order to get the pword to unlock the program files, i will have to fill out there scamming survey, I really don't want to do it... and even when it is completed they probably won't even tell me the pword... So do any of you guys know anyway i can open it? any programs or anything? i have tried ARCHPR to try do a brute-force crack, but it only supports up to 4 character passwords in the trial and im sure the password will be much longer, and im not going to spend any money... any free programs or anything? any tips and tricks? any computer hackers/crackers here to help me? The program i was wanting was Circuit wizard 1.50, because my updater for version 1.15 wont work and i need the 1.50 version really bad because it supports GENIE PIC system... once again thanks ;)