Hey u are some real helpful geezers

usually u get told to use the search box.. believe me iv done a lot of that..
ok as u told me what u want from me ill break it down. An it goes a lil something like thissssss.
First i wanted to unlock the desire so i can use any sim, iv always had to pay for that privilege before so when i seen you could do it for free i was on it, but it never worked.
Then i looked into rooting the Desire to give me root level access If i remember the first thing you have to do before rooting is get S-OFF right ?? So i did the Revo process an it gave me S-OFF, cool. what i did not like is the pink bit at the top saying Revo"""""""", Anyway so i want to have my own boot screen as when i updated to 2.3 it removed the 3 one which was crap btw an now its just the green HTC, Real boring.
I seen one showing this blue an red x with like power waves fluxing into it an it looks pretty cool so that was the first reason to root.
then i though well why not try some diff ROMS to see how i like them as the HTC os is a little boring.
I am a little worried that i may do something wrong an screw my blower so i held back last night as i started to download all sorts of things to get the job done, so im now ready to go agin but i want a proper easy method an all the files to get it done in one go, Im sure u guys can give me a method that will be done with the least amount of wisdom an mouse clicks. Not that im lazy just Im very new to this but have been a pc wizkid, ish

for the past 20 years. well not so much a kid im 40
Anyway yea so that's it I know the Desire has been worked on so much in the dev world so i think there must be a simple way to do it. last night i ended up in a terminal window and i did not have a clue iv never used any other system bar windoze. so chaps wat ya reckon, can you help a biped out

cheers fellas. much appreciation !!!!!!!