All I have is an amp modeler and a computer. I used Sonar 3 Producer and the plugins that come with it. Some dude at recordingproject.com told me to roll off the high end of the guitars, which I hadn't thought of. I thought the guitars should stay as trebly as they were recorded, so I left it. I did it, and it sounded a lot better; it got rid of this screechy fuzzy shit in the guitar part. I had the gain on the amp turned down to 2, so I don't know whats up with that.
OH and I have some Edirol MA-10D monitors. I aware that everyone says they're shitty, but they give a very flat response and are loud as hell.