The best way is to get a decent video card that has hardware encoding, especially if you plan on putting them on DVD. Hauppauge is a leader in the consumer market. They have options that allow you to add a PCI card so that you can keep your existing video card.
The higher the quality (matching the source), the more space it's gonna take up. So make sure you have a PC that's capable of handling large files. And if you plan on doing any editing, recent hardware is a plus.
Please be more specific on exactly what you want to accomplish.
~cdogg
"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein
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