Root Just rooted my Htc Aria with UnRevoked.. Now what??

[Sonoshadow]

Ok so I just finished rooting my phone and it said it was done and everything was good. I have clockwork and superuser installed on my phone however everytime I click it nothing happens and just shows a blank screen.. I wanted to remove the ATT bloatware and possibly install a new ROM.

So am I missing something to get my superuser working correctly and how do I go about getting rid of the bloatware and installing a new ROM??
Also what would be the best ROM to use??