Form with browse for file to upload "ftp"

Getting bit of a regular on here :) I am hoping that someone can point me to a script that allows me to attach a file to be uploaded to a set dir. I have already got the form built, except for a browse file option. The form is part of this admin area http://thor.ancilenetworks.co.uk/~pferrie/vinrev/adm/myadmin.html Instead of having a textfield displaying a url of the image and the admin having to upload it sepratly i thought that i could get the admin to upload the image via the form. keeps it altogether. I wouldnt know were to begin adding this to the form. i am pretty sure there a pre-built script that can do this. Can someone point me to one. i had a quick look but came up with very little. Cheers Paul