I do not know the purchase right now, but I could be around 2006. I will look it up.
On a first try, the actual version and drivers of DVC1 worked on Windows 7. I had a program termination when using the Pan/Tilt Window. After switching the program settings to Compatibility Mode for Windows XP SP3, this problem seems to be solved.
I played around for about a hour or so, I could not find more issues. Effects, Scences, Faders etc. are working.
My setup is DVC100, a Lenovo S10e Netbook on Windows 7 Home Premium, 2 GB RAM, four Eurolite TS-255 behind a DMX booster.