I don't know if you've tried either of these pieces of software but there's no harm in giving them a go.

Dorgem - Open Source Webcam Capture Application

Dorgem is a webcam capture application for Windows 9x and up. Any Video for Windows compatible webcam (or other digital camera) is supported.

It has unlimited storage events that can put the captured image on an FTP site as well as a local disk, all with their own time interval.

Dorgem supports an unlimited number of simultaneous cameras. It has a built-in webserver for still images and can be used as security camera because of its motion detection.

Or...

Freeware Home - Free Software Downloads

MonkeyJam 3.0

On the Graphic section on the left panel, click on Animation, Video

Scroll down through the list and locate MonkeyJam 3.0

Click on the download link on the right.

MonkeyJam is a program that lets you get your drawings into the computer and then stick them together so that you can see your animation come to life. In other words, it's an exposure sheet driven digital pencil test program and a stop motion movie maker. You can capture from DV, video and webcam or import individual images. MonkeyJam allows you to adjust the timing, composits multiple layers and exports as AVI.