Default Please.... Step By Step Guide : XDAII ROM UpGrade

Because i am really confused about previous step already too much, now i would like to ask you guys kindly what is the step by step guide to upgrading XDAII.

1. How to modified the Extended Rom? I would like to modified the existing 1.60.36WWE, but cant even get in using ER2003EDIT. :roll:
2. Can i only upgrade the OS ROM? If i don't wanna upgrade the Radio and Extended ROM. How do i do this? Is it only simple erase those two files and click the HimaUpgradeUt? :roll:
3. How to DUMP the whole thing to an SD Card? But i dont wanna using serial cable. I already see the previous THREAD, but i dunno how to use the HyperTerminal in the Windows XP. :cry:

Thanks in advance, Masters....