For those who wud like to know how I customize, here how it works..
This is what I do before flashing ANY ROM. I strip any unwanted apps n put any KERNEL OR APPS before flash so everything can be done in 1 flash

1) I download any latest ROM that I would like to test (eg : now im on Darky's v5.6)
2) Since I dont wanna use voodoo which already preinstalled in Darky's, I download speedmod ODIN version which contain .tar, extract it u'll get zImage in it.
3)
OPEN (DO NOT EXTRACT) Darky's v5.6 using 7zip, go to /updates. Here where kernel n modem are placed.
4) Just drag zImage which u extracted earlier from TAR file and put it in /updates. If u feel to customize ur modem (JPD for example), extract JPP_modem.zip (u'll get redbend_ua and modem.bin), drag n drop it in /updates.
5) if u feel to delete or add some .apk to be install during ROM flash, go to /system/app and add ur favourite .apk (eg : 8pen.apk) or delete any unwanted installer (eg : FMRadio.apk) .. BUT always refer to
SGS Spreadsheet so u wont accidently delete any important .apks
6) Close 7zip, transfer to ur internal-SD n flash via CWM
By doing this u wont need to flash many times just to move from default kernel to another.. default modem to another or base-medium addon and medium-full addon... all these can be perform in 1 step
p/s : You might also install the theme as well using the same method. its located in /system/framework. same method in case u need to flash .apk via CWM, edit any addon zip file and drag in ur desire .apk and flash
Hey nice info for a layman like me.