Good security solutions will cost you an arm and a leg for sickening black and white or low res colour which are wired and you need to have pc with a special pci card which controls the camera. The whole lot is real expensive.

Try IP cameras from dlink or linksys. It might be hard to source it qatar. Might have to place an order with a dealer or purchase it off ebay. It is expensive for a dimunitive equiptment. Its much more scalable. Easy to set and meets your needs to the dot.

Minimum requirement is a router with wifi capability (For wireless IP camera) or a simple router (For ethernet based IP Camera.

Say you are overseas or outside your residence, you will be able to monitor easily with a web interface. No monthly fees unlike qtels baby monitor (works on gsm network and can be monitored via multimedia enabled phone only). No complicated installation costs.