shredhead,
I look at your site, and for the most part it is really straight forward. It does appear to broken in a few places, and as Susan put it it need to be upgrade. Currently it looks like you have two options.
Option One: Find and Repair the broken or compromised PHP code, then upgrade to the latest version of Evo. Which is still not as current as Revolution but could get the job done.
Option Two: Convert the site from Evo to Revolution which may prove easier to maintain and keep up to date.
If you need help let me know, I run a firm in Florida who has done this several times. If you want help from someone closer to home, try Aaron at Method21
http://www.method21.com/modx they are in Texas.