Have a look at http://rattle.togaware.com/ http://rattle.togaware.com/ . It's a UI you can use with R and it's fully capable of doing what I described. You'll

Have a look at http://rattle.togaware.com/ http://rattle.togaware.com/ . It's a UI you can use with R and it's fully capable of doing what I described. You'll need to massage the format of your files a bit. Once you've got some outputs going, post back and I'll try and help you avoid the analysis pitfalls.