[elesbb]

startup.txt (SAMPLE) ..and/or.. default.txt (contents below)
set ramsize 0x10000000
set ramaddr 0x10000000
set mtype 2292
set KERNEL zImage
set initrd initrd.gz
set cmdline "lcd.density=240 msmts_calib=0x9f.0x39a.0x35c.0x78 7x00.a11=500 msmvkeyb_toggle=off pmem.extra=1 gsensor_axis=2,1,3 pm.sleep_mode=2 rel_path=andboot hw3d.force=1 htc_battery_smem.fake=0 htc_hw.force_cdma=1 physkeyboard=rhod400 "
Boot
************************************************** ***
* Overclocking = “acpuclock.oc_freq_khz=716800” put in between the “” above with spaces before & after.
* Build 2&3 above puts all files in root of SD, if you want move everything to \andboot & put the line above in your startup.txt: rel_path=andboot
* Google Voice to dial out, you have to modify your startup.txt set cmdline to include the following: north_am_dialing=1 ~thanks manekineko

I found it here ! lol