in general, nearly any GPS that has NMEA output (which about all of them) should work. you need to take into consideration on how it will physically connect to your laptop/PC (USB, bluetooth, serial port).
it sounds more like you are needing mapping software, not wardriving software. you mentioned Netstumbler, which indicates you are using Windows. others here may be able to suggest mapping software that will cover Israel for you. i use
http://gpsdrive.kraftvoll.at/ for mapping. it can use international maps to a point, but i do not know about Israel. it does support NASA satellite maps, but i haven't tried that. it doesn't run under Windows, only Linux.
there may be some commercial navigation solutions for Israel.