i am no fan of ishow and its dac but when i started this hobby it was the first i got my hands on and i have to say, for what it was build for worked on xp, vista and win7. With the provided ishow software and with spaghetti which was great before moving to quickshow.
Please check if you have the drivers in a folder and from the hardware list, if you see the device being unrecognized, manually point it to the right driver. This did the trick for me.
Hope it helps.
--------------------------------------------------------------------------------------------------------------------------------------------
Michel Rietveld @ Utrecht The Netherlands
FB3, BEYOND Ultimate, 3xFB4, apc 40
1x5W RGB 637nm 1.3W, Edison Blue 2.5W 445nm and CNI 2.5W 532nm Greenie with Pico driver with DT40Kpro scanner set
2x3W RGB DT30 scanner set