converting mysql to wordpress friendly format (csv?)

So, there’s a site currently set up with around 56,000 posts submitted by the public. It’s not run on wordpress and is in desperate need of a redesign!

I’ve been asked to do the redesign and import all 56,000 posts. The posts are in a mysql database that I can easily grab. Any ideas as to how I could make it wordpress friendly? It would be great to think that I could convert to a csv and BAM, it’s done! I know that this isn’t possible, I’m just looking for a way to make it a real easy import.

Any ideas would be kindly accepted.

Thanks.

g