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J/K your phone is ready to flash via sd card.
Jjust insert the card with the renamed RUU_signed.nbh to TITAIMG.nbh on a fat32 formatted sd card less than 2gb, the 512mb one that came with your phone works fine after its formatted to fat 32.
Follow the on screen instructions and flash away.
Your best bet is to flash to a full sprint release first. The new 3.56 bc it comes with the newest titan radio.
Flash that one first no need to let the custimizations run bc you will just be flashing to a custom rom afterwards.
Most new Custom roms reqire the newest of gps radios to work so flashing a full new stock 3.56 will do that for you and set the phone up.
If all this seems like to much jibberish you need to take a look @ some of the posts on the newer rom pages. While your at it, it won't hurt to take a look @ the wiki ethier.
WIKI Titan Page
http://wiki.xda-developers.com/index...name=HTC_Titan