iphone 3g screen protector help?!?

[cp14]

okay so i just got the iphone 3g and it's my prized possession right now and i love it more than anything.
i was just wondering...
i bought the SGP ultra thin case that comes with the screen protector,
and i also bought the invisible shield which was highly recommended by friends...
is it possible for me to apply both screen protectors?
because the one from SGP, that came with the case,
it's fingerprint protected meaning you won't get any finger print on itt.
but the invisible shield prevents scratches.
so is it possible to put both screen protectors on it, without interfering with the touch screen?
or will it actually effect the touch screen and not work as well?

please help!!

[shoegirl01]

I want you to grab your keys and try to scratch the screen of your iphone......... Did you do it? Ok, now you know, the screen is made of this unstretchable plastic. In my opinion, the protectors look like poop. If you want to apply it you have to be sure you get every speck of dust off the iphone or you'll have tuns of bubbles. If you have any bubbles, take the cloth and rub the screen with it, it will rub them out. But keep in mind the sales rep made some commission off you because the screen protector is not necessary.

[manghostingblue]

the invisible shield also protects against finger prints
and i dont think that it will mess up the touch screen because the iphone uses a capacitive touch screen which reacts to the heat and the electricity in your fingers so it will still sense it