I'm sure it's been asked before, but maybe not in relation to the software being updated.
Anyhoo, I'd like to dip my toe into the murky waters (to me, anyway!) of Vag-com.
By, "dipping" I mean as cheaply as possible!

Is my understanding correct in that I can download a version of Vag-Com from Rosstech? If so, which version?
I would like to support Rosstech, so would prefer to buy the cable from them too - but not at the rumoured $250-odd!!!
What's the cheap option - I'm not a mechanic by any means, but moreso a nosey git who wants to learn more about his new toy

Any advice would be extremely appreciated

Thanks in advance,
Dano (b5 S4 Avant - pre-facelift)
edited to add - is this available for PPC2003 (got an Ipaq in the car)