I downloaded the Alfadiag software onto my Netbook PC, and used one of Rarebears's cables as they have USB connections instead of the usual RS232, and have all the pins fitted. The software runs fine on a netbook with a 1.6 GHz processor and 1 GB RAM. Beware - I tried to find out what the system requirements were by downloading a copy of the software from a site called 'Alfadiag deutsch rapidshare'. All it downloaded were two Trojans!! Last week I had the glow-plug warning light flashing on my Mjet. The OBDII reader I keep in the boot couldn't find any fault codes stored (I keep this handy in case any crank sensor or turbo over-boost alarms come up and put the car in 'safe' mode) but the Alfadiag software helpfully identified the problem as a sticking relay. I was then able to run a relay test using Alfadiag which appears to have sorted out the problem, but I'm awaiting the next cold morning with some nervousness.