thanks very much Quad, you've been really helpful. those pictures are very useful for getting an idea about how it should work. similar to what i've seen in wikipedia. i'll get a new case asap.

i'm abouta be away for 5 or so days, so if anyone has anything useful to say between now and then, my gratitude will be delayed somewhat.

thanks again Quad, and everyone else who's been helping,

julz

EDIT: btw, any recommendations brand-wise?