Just wanted to post in this thread to add my experience, since this thread helped me so much. There's a lot of different combinations of software/hardware/vehicles, so every data point helps. Here is what works for me:
Car: 2005 SAABARU 9-2x
Laptop: Dell Latitude, Windows 7 Pro
Drivers: Latest FTDI downloaded from website, set to 4800 Baud rate
Cable: Ebay with power jumped from 11 to 16
ECUFlash: Current
Romraider: Current
Logging: I can't log as many parameters as I could with a Tatrix cable, but other than that logging seems fine (20 vs 24 or so)
Flashing: My ebay cable is jumpered interally, so I don't have to worry about jumping power. However, I do get a voltage out of range error 99% of the time. I turn on my headlights and it works.
