Are you talking about the external scan converters that people talked about earlier in the thread and didn't like?
It has been a few weeks since I've read this entire thread. However,....
I'm pretty sure that you're correct in that they've been mentioned in this thread.
But I don't recall reading much (if anything) negative about them. What were the negatives?
I happen to own one, and I don't really have any complaints, so far. Pricewise, it's about the same as (or less than....in some cases) the ATI/dongle solution. As far as image quality, I don't have the ATI/dongle, so I couldn't say. I haven't seen any comparisons. As for setup, it doesn't get any easier than what I have...just hook up all of the cables...and overscan can be fixed with the XP Pro. Whereas, with the ATI/dongle, I believe you need to install that Powerstrip (?) software. However, if you have a TV that lets you adjust HSCAN and VSCAN (like the Toshiba 27A34, for example), you may not need the Powerstrip software.
BTW, I'm NOT saying that one's better than the other. I'm just throwing out another option for you, since an affordable ATI card seems hard to find.
Again, I didn't think that the feedback was negative. All I remember was someone pointing out the XP Pro, and getting ignored...then finally someone saying that it was too pricey or something. But that's all from memory. I'm too lazy to go back and read the whole thread again.