Help..database too big

I am new to eventlog Analyzer 5, but, I installed this a few months ago to capture logs on my Domain Controllers. I looked today, and the myssql\data\eventlog folder has grown to 95 Gig! I then realized the current storage size was set to 365 days and I was capturing all events including informational/success event. So, I turned those off and set the size to 15 Days. My Archive folder is only 2 Gig. How can I shrink or get rid of the eventlog folder and get it to a reasonable size. I have to believe there is a way even if it is just deleting all the fiels. Also, am I correct to assume that going forward, 15 days is all that will be kept, but, the Archive folder can continue to grow?? (We want 6 months of data available for Audit pursoses) So, I still have access to the data if need be??? I set the File achive setting to be 24 hours for both File Creation and Zip creation.
Please help..I'm running out of space fast and need to free it up. The .myd files are HUGE.

Damian