You can change it in the advanced properties settings under 'Display', (if the card hasn't determined the particular monitor) but it would be like trying to frame a picture that's larger than the frame itself. You'll wind up viewing only a portion of the actual image.
What is the problem with the resolution?
Grant

My video card can handle up to 2048x1536 at 85 Hz, it's an Intel 82915G/GV/910GL Express Chipset Family.
I want to get higher resolutions in games, but if I do, it might get super lagy since Intel graphic cards are intergrated, but I just want to experience what other games experience :( all this time I've always been challenged at games since they run so slow I have to be really good in order to kill an enemy, please help me.

The answer is no.  Optimal native resolution is best and going upward just because your card can do it, will not work on your 17 inch.  Just buy a 20 inch or larger LCD.

And buy a REAL card (instead of using the integrated video). Newer games are a waste of money unless you've got a decent card that will handle them properly. And honestly, a 17" LCD is a great monitor for gaming. Once you start pushing resolutions of 1600x1200 or more (with games like FEAR, PREY, Oblivion, BF2, etc) - you're going to need about 2-4GB of RAM and either a 7800GTX/7900/7950 or an X1800/X1900. Using 1024x768 or 1280x1024 will still look phenomenal and require a less powerful video card.
Grant

i agree buy a new lcd and a new card

If I had the money, then I would buy ONE!!!!!!!

Be happy with what you have, and save for another monitor later on.   Also wait for a good promotion and coupon to get a better deal.....

Why do only CRT monitors able to get the video cards resolution and not LCD?!

CRT’s are scalable, and you can raise or lower the resolution settings. LCD’s however, are different. Any settings lower than the native resolution results in either letter boxing, which maintains image quality by shrinking the image to a compatible size, or keeps the full screen image, but adjusts for missing pixels, sacrificing image quality.

CRT's, must refresh every pixel on the screen. Screen flicker with an LCD is not an issue since the monitor does not refresh like a CRT monitor, so a refresh rate of 60 Hz should be just fine for an LCD monitor.

A few new owners of LCD’s often find that the size of the fonts are too small for them, failing to realize that LCD’s have a native resolution for each size monitor for best viewing experience. IE : A 15 inch LCD has a native resolution of 1024x768, and a 17 / 18 / 19 inch LCD has a 1280x1024 resolution. A 20 inch LCD has a native of 1600x1200. The higher the resolution, the smaller the fonts. What you get is more information on the ( So you don't have to scroll, left/right or up/down that much ) larger screen with the native resolution of 1280x1024 over the 1024x768 resolution. If you purchased a 17 /18 /19 inch screen, but are uncomfortable with the smaller fonts, lowering the resolution to 1024x768, as some have done, now gets you less information on the screen, wasting the extra money you paid for the larger monitor in the first place, not to mention sacrificing image quality. Just should have gone to a smaller LCD instead, or perhaps a CRT screen, and saved big bucks for the same real estate. Some with bad eye sight to begin with may not notice the image quality being less than optimal by lowering the resolution, but others will.

It is best to look at some monitors at the local computer store first prior to any purchase to see if you are one of those that have eye sight problems.

http://ecoustics-cnet.com.com/4520-3174_7-5136369.html?part=ecoustics-cnet  Analog compared to Digital ( DVI ) article

Do a google search on that final question of yours and you will find some answers.