Depreciated Errors

[pfb732]

Hello, All!
I had no trouble installing Zen-Cart 1.3.9 Full File Set, but when I try to access the Admin page, I receive a Depreciated Error message for each instance of ereg, eregi, or anything to do with ereg. The environment I am working with is WAMP Server 2.1, PHP 5.3.5, MySQL 4.1.22 because Zen-Cart didn't like MySQL 5.5.8, and Apache 2.2.17. I understand part of the problem lies in the fact that PHP 5.3.5 has depreciated the ereg series of functions and replaced them with preg_match. Should I be using an earlier version of PHP, or has Zen-Cart released new versions of their PHP docs? I also have the same error with the magic_quotes, even after disabling it and commenting it out of the code. Suggestions, please? Zen-Cart came highly recommended to me and right now I am disappointed and frustrated.
Thank you.