Why not just list down all the entry level cams from each brand and go to a shop to try them out. Just get the one that is most comfortable to you and you can also see for yourself how easy it is to use for each cam.
U noob arh? Ok. Understood. Go get the cheapest PnS out there:bsmilie:
Ok, jokes aside.....
Erm Presonally i used cameras from both the dark n light side before. That includes 400D, 450D, D90, D80 and whatnot lah....
IMHO, if u really are that much of a noob, go for Canon. Well, at least to me, Canon's user interface n button layout comes more naturally to me. It's kindda erm.... U take up the camera then u noe what to press kindda thing:bsmilie:
Nikon wise, In particular to the D90, I studied the buttons n menu for a good 30mins before i figured out how to use it. But well, that's juz me. And i could be more of a noob than u:bsmilie:
sigh... if only i have the money, I'd go straight to D90.. but for now, budget is still in concern.. I will just purchase D60 instead.. but anyways, they say D60 is also a good camera.. it's all in the handler.. i mean the person behind it..
If you have the cash to spare, the inclination to learn and have your heart really set on the D90, then by all means Especially if you have been doing your research, have actually tried holding it in your hands and thus gotten a 'feel' of the camera.
Then as what the others have mentioned, learn more and shoot more.