Leanne, normal Alkaline batteries won't last much time at all in a digital camera. Not even Duracells. I'm assuming your camera takes AA batteries so I recommend you consider buying a set of 4 NiMh (Nickel metal hydride) rechargeable batteries with a fast battery charger. They aren't very expensive these days and you will save loads of money in the future as they should allow you to take and review lots of photos before they need recharging. Get 2700's if you can as they are the most long-lasting you can get.
I'll also cast my vote for the Canon Powershot cameras. I've got an A710 7mp camera and it's great but probably has more functions than most people need so any of the A series would be a good choice as they are all well-rated. The A610 is a 5 megapixel camera, the A620 a 7 megapixel, and the A630 an 8 megapixel camera. They all have quality 4x zoom Canon lenses and a proper viewfinder as well as the LCD screen which I find is especially useful when taking photos in bright sunshine when the screen is less easy to see.