Hi,
Theres loads of programs thay will help you unlock a .zip folder - the password protection is weak at best. You'll need to copy the .zip over to a PC though.
This is one of them
Zip Password Recovery Fast and Easy - PicoZip Recovery Tool but there are loads more.
It might take a while to break your password, depending on how strong it is and how good the dictionary bundled with the application is, but you should be able to regain access fairly easily.
If you still can't get in PM me as I might still be able to help.
frosty