Submit Value for Form on another Website

I am an Avon rep, and I am able to refer people to this site and get credit if they sign up:

[url]https://app.firstusa.com/ICBatch/?PID=none&SPID=2Z7J&CAT=66820016&CELL=6DPV&AFFID=&CLICK=&CID=&PROMO=DF01[/url]

Obviously, though, in order to get credit, I need the

“If referred to by your local Avon Representative, please put Representative Number here:” Value, or

the “sEmployeeID_Type6” value

for the form to have my number in it, which is 04398420. In terms of ease of use, I doubt my clients will bother pushing the back button to find it.

Is there a way where, using a link from my site to the site in question, I can have that value filled with my number?

My website, which is currently under development, is [url]www.sestinawellness.com.[/url]

Thank you all so very much!

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