Am going for S-Off, referring to this guide:
http://alpharev.nl/Questions:
1) What I need to do 1st? Download --> AlphaRev 1.8 HBOOT reflash utility?
2) After that burn the above to CD and run on a PC with phone connected via USB?
3) What are those .img and PBIMG99 files listed on the table below? To change the partition table size?
Name /system /cache /data MD5SUM Download PB99IMG
Bravo Stock 1.8 250M 40M 147M 5524356f35f7ba12950df7ad6f45fc2c bravo_alphaspl.img PB99IMG_bravo_stock
Bravo N1Table 145M 95M 197M 30b49d55a5457764af275c12d113d38a bravo_alphaspl-n1table.img PB99IMG_bravo_n1table
Bravo Data++ 180M 5M 252M 7db14ed41e5237f59dfb067febf0a8a5 bravo_alphaspl-data.img PB99IMG_bravo_dataplus
Bravo Sense 180M 40M 217M e83f32c97e9f9c16ae198fe4b6777c12 bravo_alphaspl-sense.img PB99IMG_bravo_sense
Bravo Oxygen 90M 10M 337M 0ac1bd252276a7e81c24d601569746e1 bravo_alphaspl-oxygen.img PB99IMG_bravo_oxygen
Bravo CM7 130M 5M 302M 7d77af3f9b197b48d709db8cd18da925 bravo_alphaspl-cm7.img PB99IMG_bravo_cm7
4) Im currently on LeeDroid2.3d, is there any specific Hboot above that can be run on this ROM? Or any of the above Hboot can be used?
Thanks in advance.

1 2 I dare not say anything. Just search around the CD method for PC on xda.
To change to one of those partition tables, there's a link at the far end .img of it download BASED ON UR ROM. Since Leedroid is Sense, dl Bravo Sense.
follow it's instructions, run it, see the flash hboot, click it. Enjoy. If got problems, tell us o.o =]