Carrying values??? Help!

[google503]

I have a long order form on one of my pages. It uses php to compile the info into an email and send it to me.

I've run into a slight problem. Im using paypal to host my method of recieving payments. This means adding a paypal button to my website. This isn't just a button its a form with several hidden fields. As its a seperate form and a submit button I can't put it inside my other form or it would submit that instead. Also as i've used javascript to change the price they have to pay due to what they've entered in I can't just re-direct to the paypals page afterwards.

I thought I might be able to carry over the value of it and give it to the page when it re-directs to paypal. This may not be how you do it but I have no other Ideas. Any Ideas?

All help will be very apreciated!