@eugene, this is what I normally do when trying various rom to my phone..
I fresh install the stock firmware using SEUS and in my case BB54 is default baseband. Root and install xrecovery it and using xrecovery I backup the rom and name it SE_FRESH.
Then I will install whatever rom that I want to try or test. So when ever I what to change or try any other rom, I will backup my recent rom first then I'll go to xrecovery and restore my SE_FRESH rom and install the other custom rom. With this step I always save a lot of time rather than reflash again using SEUS or flashtool.
@amon90, install market enabler and set your operator to US (you need to root you phone though), you'll see a lot of apps that you can't see before.
@vaizard, you don't need to root your phone to install dsp manager apk, the latest I get dsp manager comes with preset....but I would advice you to root your phone, so that there will be no restriction for you to enjoy your phone....
@superflash, android for me is for geeks meanwhile iphone and BB are only for not that smart people.....

, once you get to know android, you'll feel iphone and BB are dumb phones.....
Thanks..its show the pay application now...