Ok, i understand a little better now. It is odd that your PCI card doesnt support USALS. USALS is sometimes referred to as Diceqc 1.3 in some poorly written manuals. Is there a reference to this?
I think your frustration is better directed toward Hauppauge and not
Sadoun. A quick look at Hauppauge's website shows software update links that are expired. That, and releasing a product without USALS support kind of sucks. There are at least a dozen computer based DVB recievers on the market and they do support USALS, so the Nexus seems to be the odd one out, and the one that should include a disclaimer about motor incompatability.
Sorry I can't be more help, hopefully there is a 3rd party solution somewhere.