Create a Doc for Filling Out and Sending On

Question

I'm trying to create a document for pricing quotes.
The idea is that I (designer) create a document (writable) for a client to fill out, save (unwritable), and send to customers for price quotes.
I've tried:
creating text boxes - but when the document is filled out and saved, the client is still invited to change the fields (we don't want that!)
creating signature boxes - which pulls up a lengthy and complicated signature field
signing the document with multiple signatures - a hassle I wouldn't wish on a client
going to the "sign" field of Adobe Reader, clicking "Add Text," and saving the document. - The save option still leaves the text editable upon reopening; the email option requires an echo account, which we're not looking for because we aren't actually creating legal documents.
Any advice? I could really use it!George Johnson was helping before, when I hijacked Island Lady's thread (eep! sorry about that!)
I'm using InDesign to create the document, saving into Acrobat Pro, and and/or reading in Adobe Reader (which my client will be using).
A sample of the document is HERE

Answer 1

Here are the preliminary instructions I'm sending to my client:
Open the Document in Acrobat Reader 11.0.07
Click on “Sign.”
Click on “Place Signature” -or- if you’ve already done this once, click on the corresponding arrow, then click on “Change Saved Signature”
Select “Type my signature”
Type the word/s you would like to type in the “Enter Your Name” field (never mind that it’s not your name )
Click “Accept”
Drop the word/s in the text field you would like them to go in.
Repeat until the form is filled out.
Click “Signed. Proceed to Send”
Click on “Save a Copy”
Rename your document so that a copy is saved for you to email to the customer.
Email your document using your own email program.
Finished!