Revolutionary cannot be installed if hboot is 2.00.0002.
If you are determined to carry on with installing custom rom there are two options.
1) Downgrade hboot [guide]
then s-off with revolutionary, and you are ready to go
2) unlock bootloader [guide]
, flash recovery and you are ready to go...
Both methods have their advantages, but i would recommend to go with first.
It is much more difficult, but you will be forced to learn much stuff that surely will come handy later on, and i have to say that some roms didn't work when i installed them via second method.
Read forum. I know it's overwhelming, but answers to all these questions are here.