ok :)ill give it all outi have designed a prouduct, that i am selling, i ahve already created the members area.... i just need a code that i can send to the user to allow them into their members area...the way i currently have it set up is as follows:A * B - C + Dnow, the problem with that is, if you have more than one key, you can customize your own, by replacing some parts of the key with another... because its strictly math based...i need someway to make it imposible to reproduce, or recreat a new key, it must be generated by php :)there are 6 textfeilds, each can contail 4 letters(just so you know, A dose not equal 1, B dose not equal 2)Ive also split up (using php) each sections... so, if textfield A, had the letters Q, W, P, C... it would add each of those letters to an arrayive been loovin at encription, but that dosent seem to be working verry well :(I really hope you can help, ive been working 2 days on this, imalready late on this