If you want cm7 then here's the link to check out http://rootzwiki.com/topic/10191-upd...bers-cm4dx-gb/ looks like the current build is 4-12-2012 and you'll also need to flash gapps which is google apps and that's in the link also. The gapps you want is 20110828. You'll use your droid2 bootstrap to get in recovery then wipe data /factory reset and wipe cache partition then select advanced and wipe davlik cache then select install zip from sd card then select choose zip from sd card then find your cm4dx zip and install it. Once it says installation complete then select choose zip from sd card and find your gapps zip and install that also. Once that's done just select reboot system. There's also plenty of videos on youtube on Installing roms on the DX so you can check that out also.
EDIT... One important thing to do right now if you haven't already is go in your settings and select accounts and press your google (gmail) account and sync your contacts. Otherwise when you install a rom you won't have contacts. Verizon backup assistant won't be available on the rom. You can also backup your contacts to your sdcard but just make sure they are backed up to your google account.
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