Workaround solution PDF Form for Reader 8 & 9 - or is it?

Question

I've devised a workaround solution to make pdf forms work consistently with Adobe Reader 8 & 9.
I'd like to run it by you guys to see if you think there's a better solution or whether I could have created problems for myself.
Initially I had a simple Submit button on the pdf form that linked to an email address. But then I discovered the button worked differently in Reader 8 & 9.
In Reader 9, the Submit button opened the attachment in an email with the address in place. Great!
But in Reader 8, the Submit button (despite asking whether you use desktop or Internet email) only saves the pdf. You then have to attach it to the email manually.
My aim was to create a version that worked the same for both Reader 8 & 9 - so that I could provide one simple set of instructions that would work for both. And so that my customers wouldn't even need to know which version of Reader they were using.
The version I've created enables people to open the pdf form in Reader 8 or 9, fill it in and save it. Then they can attach it to an email in the normal way.
Although I won't be telling my customers this: Users of Reader 9 will also be able to open their completed file directly as an email by clicking the Submit Form button.
My solution was to create a hidden Submit button that didn't work!  Without it, the fields wouldn't work in Reader 8. But its presence prevented a substitute Submit Button appearing. The problem with the substitute Submit Button was that
a. It blocked out my artwork
and b. it didn't work as a Submit Button anyway - it only saved the document!
Here's what I did. Please let me know if you think some of the stages were unnecessary:
In Acrobat Preferences - Identity - Make sure email address is the one client wants emails to go to.
To create invisible submit button that doesn't work:
Button Properties:
General - Hidden
Appearance - No Border or Fill
Options - Layout - Label only, Behaviour - None
Actions - Select Trigger - Mouse Up, Select Action - Submit a Form
Submit a Form - Edit -
Just type in  - mailto:   ... not the rest of the email address
Select PDF
Forms - Distribute Forms
Manually Collect Responses in my Inbox - NEXT
Save a local copy and Manually send it later (choose where) NEXT
Deselect Collect Name & Email

Answer 1

Your best bet is not to use email at all. Post the form on the net and have them fill it out and use a script to email you the responses or to place the data into a database. Too many people don't know how to use attachments. You have to worry about the 500 users/uses limit. At the University I work at, I'd guess15-30% of the students, faculty and staff don't know how to use attachments. I doubt the real world is much different.