There are lots of offerings though you need to pick carefully as these providers are falling by the way side at a frighteneing rate.
What country are you in? What countries do you need to take payments from?
Just looking at your site quickly I would suggest you look at
www.nochex.com -
www.epassporte.com -
www.payhound.com
Thats just for starters, do you have ICQ? I will be happy to share other informatiom with you :-)