On a typical 17" monitor, your resolution is set to 1024x768, or maybe 1280x1024. A 5MP photo dimensions are approximately 2560x1920 - more than twice the size of your 17" screen's resolution - so the megapixels are definitely nothing to worry about - you've got far more than the full size of your monitor needs to display a lovely sharp photo, and plenty for a beautiful photo-quality print up to 8x10".
As Mickey88 mentioned, it is far more likely that your photographic skill and/or the camera settings are the culprits, or the conditions under which you are trying to take the photo...or some combination of all three.
Camera shake is the most common reason for blur, even when people don't think they are shaking the camera. Even small vibrations, fore and aft movements, etc during a shutter release can cause the photo to come out blurry. By teaching several family members who are not 'into' photography how to hold a camera steady, and how to steady themselves and prepare when taking a photo, I've seen big improvements from all of them in the number of keepers, and much better results in sharpness and detail. Breathing out, bracing elbows, half-pressing shutters first, then gently pressing the rest of the way to take a shot, and holding still for at least 1/2 second to 1 second AFTER pressing the shutter button, will all help address blurry photo issues.
Also, a camera's settings can make a big difference. If you are using 'auto' mode, your camera is likely using 'multi-focus' points - or looking for something to focus on anywhere in the shot. When shooting landscapes, buildings, portraits, etc with busy backgrounds in daylight, the camera can very often focus on the wrong thing, throwing your intended subject out of focus, and therefore blurry or fuzzy. I would recommend setting your camera's focus mode to 'center weighted' that way the camera will focus exactly where you point the center focusing box. And always half-press and wait for focus confirm before pressing the shutter the rest of the way and taking the shot.
If you are shooting in lower light, cloudy days, nighttime, dusk, indoors, etc...anything less than bright sunlight...it's also possible your camera just isn't getting enough light to pull off the shot without having to use very slow shutter speeds. Slow shutter speeds means your photo requires the shutter to stay open for much longer to absorb enough light to take the shot - all during this time, the shooter must remain perfectly still, or the shot can end up blurry.
Your camera likely isn't the issue - if it's 5MP, it should be fine, as long as it's from a good camera brand (Canon, Casio, Fuji, Kodak, Minolta, Nikon, Olympus, Panasonic, Pentax, Sony, etc).
Do post some pics if you can, and we can help determine what the problem area is, and how to fix it!