Do you use timing software with your sets fella? I've just literally yesterday looked into using pc lap counter with a webcam motion detector program called webcam zone trigger with my Micro Scalextric set, it's gotten me really hooked and it works absolutely perfectly. PC lap counter works great with digital sets, and supports most digital hardware. Only viable options for micro sets are the webcam or infrared bridge. Both bits of software are demo versions at mo, I'm planning on buying full versions soon, more track, some more cars and a netbook so I can use it all in lounge downstairs cos my bedroom is absolutely tiny!
Lee.