HELP with forms

Is there a way to read a FORM varaiable into PHP variable. The kicker here is the form variable is in a framed window. Example, I have my main page in a 2 part frame (90%/10%). The bottom 10% has a form on it called 'fileform' with one text box called filevalue -- source snippit -- <FORM METHOD=POST NAME="fileform"> <input type="text" name="filevalue" readonly maxlength=11 size=11> </FORM> -- end snippit -- Now inside the 90% window, I have ANOTHER frameset (broken into 3 parts.. a left menu bar, a bottom instructional bar, and a main window. I NEED the main window to grab the value from the 'fileform.filevalue' and return it to a PHP variable. Any ideas???? Dave