What you do next really depends on
- budget
- how much time you want to spend learning new equipment
Personally, I hate having to learn new hardware/software when my old method was solid and worked well. It's not fair when the computer parts want to die on you.
And it's going to be hard to replace the quality and ease of that specific ATI All In Wonder card.
I would suggest simply replacing the AGP motherboard for $25:
http://www.amazon.com/gp/redirect.ht...reative=390957
The 2400+ AMD is a Socket A connections.
For MPEG-2 / SD capturing computers, you don't need anything special. In fact, you can do MPEG editing and DVD authoring on older systems just as quickly as you can on the newest multi-core computers. Anything in the Intel Pentium 4 2.0Ghz or AMD 2000+ range is fine for these tasks. They'll even re-encode MPEG with decent speeds. It's when you get into advanced editing (compositing + effects), Blu-ray authoring, HD and H.264 that you really need/want those faster multi-core systems.
It sounds like Roxio was maybe re-encoding your video?
Your newer/faster method sounds similar to mine, although with different software.
If you really, really, really want to invest in new systems, the basically anything you buy will be fine, as far as the computer itself goes. I really like the various HP systems:
http://www.amazon.com/gp/redirect.ht...reative=390957
I bought one of the HP Slimline desktops last year, nice small footprint on the desk, to use in the office. I can easily carry to the big TV and use it for a media center. or I can put it in a small backpack, to take on trips, in case I need to do on-site work (finding a monitor is always easy). It's a quad core with a Blu-ray drive:
http://www.amazon.com/gp/product/B00...SIN=B002C0SPCG
As far as the capturing card goes, I use an ATI 600 USB, with that system. For MPEG capturing, I'll use ATI Catalyst Media Center -- it's much different from ATI MMC of yesteryear. For AVI capturing, I'll use
VirtualDub. The ATI stick is about $60 from
Amazon:
http://www.amazon.com/gp/product/B00...SIN=B00138EOH8 -- Don't let the photos fool you -- it's more than just a TV tuner with a coax input. There is a breakout wire that comes with it, for s-video and composite capturing. The photos are misleading.
The Blackmagic card isn't really the tool for this job. That's more for uncompressed capturing, HD work, editing, etc.