I know this post is quite old and probably Janice had found a CCTV vendor in Singapore. In case there are other SME that require such security services, let me share a few pointers and hope this help everyone. Nowadays, IP camera from Hikvision is pretty popular. Because it offers good reliability and cost is not expensive. Don't get those consumer cameras like Dlink or Samsung from Challenger. Next, select the type of camera. If the indoor area is small, a dome IP camera is good. If you have a wider office area and need to zoom in the details, get a bullet IP camera. I STRONGLY do not recommend a wireless camera even though you may have a fast WIFI in the office. Why? Because recording takes a lot of wifi bandwidth and may slow down other PCs that are using wifi too. Also, the recorded images via WIFI tends to be choppy. You don't want to see skipped videos at the most crucial scenes. Instead, use a wired structured cabling and get a professional to help you. They would know exactly where to run the cables and mount the cameras to get the best view. Hope this helps everyone.