string question

I hope I can make myself clear on this question ... here goes. On the previous form, I input values for Q1, Q2, etc. Now, on the subsequent page, I want to write a "for...next" loop to look at each of those variables and act upon them. I've tried : $product = "Q" . $i ; $product_order = "\$" . $product ; to get a string which, I hope, contains "$Q1" or whatever....NOW how do I get the VALUE of that string, i.e. the value entered for Q1 on the form on the previous page? I apologize for the elementary question, but I'm AWFULLY confused. Thanks in advance, Kenn