RaffleScript.com Modifications

I purchased the raffle php script called [login to view URL] and now have to make changes to make it work for my purposes. I'm looking for someone familiar enough with this type of work that can troubleshoot problems with script, modify script to do what I want, modify MySQL database to include new fields/tables needed to accomplish any new processing. I'll Load further details in Project PM for your review. If you can't work on this imediately (like this weekend) don't respond. I need everything done by Monday.