Sorry Greenbag but your listed specs for NLE are way off! I have been useing a P4 1.8Ghz PC with 512Mb (since upgraded to 1Gb) RIMM RAM for the past couple of years with no problems. I've even got a friends PIII PC working for NLE. Its slow, but gets there in the end

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david2005, the list of things to do to get stable capture have been listed on this forum many, many times (often by me

) so a quick search for things such as 'dropped frames', 'DMA', 'EndItAll' should bring up loads of things to try before spending loads of money upgrading a PC that is plenty good enough to do what you want
Mark.