A few things you might wanna take into consideration. Shutter speed, focal distance and lighting.
If you are taking pictures where there's low light (i.e., inside a building), then try using fast lenses with big appertures (this lets more light get into your camera). Lenses with VR would be a good option. You may also wanna adjust your ISO setting. A higher ISO setting makes your image sensor more sensitive to light. (try ISO 400 or 800). Rule of thumb: Your shutter speed should not be less than your focal distance. (If your max focal distance is 200mm, then havin shutter speeds below 1/200 would likely give you a camera shake (or in your own words... blurr). You can use internal or external flash, or if you can't then use a tripod.
Try different techniques or combination. There is no exact magic configuration/setting. Experience would tell you best. Experiment on exposure bracketing. Take advantage of the "digital technology". You have the delete/trash option when the exposure is not right. It's not like the old days when experimenting is kinda expensive and time consuming.
I'm assuming tho, that you have already found out what's wrong because you haven't posted back after all those tips and suggestions that came from earlier posts by members.
*just puttin in my 2 cents*
Hope it helps.