Assuming you are talking about VHS video, you could capture video by connecting the video out on your VCR to a DV camera on pass thru mode(or direct from VCR to video card on PC) into your PC. Just need big hard disk and use any video editing software eg Ulead Video Studio. Plenty of stuff(guides and software)on www.doom9.org that explain this.
Of course if you had a DVD recorder this would be the easiest/quickest (but less flexible) way. At less than $500 now they are certainly affordable and worth thinking about if you have a lot of tapes to convert.