Custom rom unstable to flash new rom, plz help!!!

i have rooted my HTC G2 by this way:
http://xdaforums.com/wiki/index.php?title=HTC_Vision#Rooting_the_Vision_.28G2.2FDZ.29_and_DHD
I installed my first rom just fine, my first rom is
http://xdaforums.com/showthread.php?t=1117841
the vision core droid v1.0

now I want to switch to a new rom, i have tried many rom, but I did not get any one of them working. I have wiped the data every time....
My hboot version is hboot-0.76.2000
clockworkMod recovery v3.0.2.4
is it because I have the older version of hboot or recovery?
Or is it because it has something to do with the kernel?
Please help, thank you! I'm too noob to figure out, I have done a lot of research on it... I even tried to upgrade it to vision core droid v1.2, still not working, just goes to htc white screen and return back to recovery. some other rom just stuck at white htc screen after flashing.... now i can only reinstall the coredroid v1.0 back to my phone... seems like this is the only rom works for my phone....
thank you for your time!

I have been flashing sense rom's.... is there a way i can flash sense rom? I really like the sense rom... thanks i'm using google G2

so if i just install the Desire Z hboot to g2, then my g2 should be ok with any sense rom's right? I just want to make sure. thanks!

thanks a lot, it really worked.. appreciated!!!