How can I put/use a variable in a Form so I can dynamically set INPUT
Type="FILE" NAME=<I need a variable here !!!>...

I am putting image files from a local machine to a folder on our web site,
using a Form (multipart/form-data), usually jpegs.

I have heard somewhere that because the send is 'binary', Form variables don't
work ? I need to dynamically set which folder that the user selects from a menu
in the form, that the form will save the image to ? sounds simple but I'm quite
new to web stuff, but an old hand at databases and 'terestial code !!!). Please
has anyone any ideas ?