how do u soft mod ps2 fat with only the stuff i have

i got : 8gb sdch class 10
4gb usb
but so my rig is a phat ps2 refurbished
i dont know how to confirm if its ntsf or pal
could u help me identify my version
so the games i have: midnight club 2, tony hawk pro skater 4, street b-ball, splashdown, and -------------i have opened up my ps2 to clean parts
but could some body plz help me.
i dont want to option of a mod chip, because i dont want to burn out the lazer.