So far I've learned that you need to download Ervius' 1.8.1 kitchen and then update to 1.8.3 with the .exe update. From there, follow the how-to here:
http://www.mobileunderground.info/sh...hlight=RHODIUM
That's what I've been following. There are many more tweaks that I'm sure I'm missing, but I can tell you that what I've done so far has worked. I've got 65% free RAM when I boot and it's certainly peppier. But not as snappy as some of the full blow custom ROMs out there. I'm sure I'm missing tweaks.