4-pin & 7-pin s-video cables

[Claire Hart]

I just received my powerbook, and began to install FCE.  The PDF 
"Installing Your Software" recommends that, before you install FCE, you 
connect and turn on your video equipment so Final Cut Express can 
automatically detect your method of video capture.  I got my Sony 
miniDV camcorder out and found that its S-video is 4-pin and the 
powerbook's S-video is 7-pin.  Is my solution as simple as buying an 
adaptor such as this one I found through google?  
http://www.svideo.com/7pin.html

I also have another cable that came with the camcorder, an i.Link 
interface.  With this cable, do I not even need to worry about the 
S-video?  I've lost the manual that came with the camcorder.

I have a ProScan Hi-8 camcorder as well that I'd like to transfer over 
to DVDs, so I might need that cable after all.

Thanks for your advice,
Claire