please help me to write a formal confirmation letter

we are buying somethings from a company. I have recieved the proforma invoice and they ask for a formal confirmation letter before they start producing.

I am going to write it on the company paper with full details of name and adress. Then how should I start and finished the letter?

my company adress and details

date

their address

Dear Ms. ....

We urgently need

the product details

yours,



********

**********

*********

Phone: *******

Fax: *******

Ms. ********** 28.10.2005

Sales and Export Manager

*******

*****

****











Dear Ms. B***,



Thank you for your offer. I am writing to confirm your offer and we urgently need;



12 mats, each 3.1m x 7.45m

12 mats, each 4.1m x 8.9m

12 mats, each 3.1m x 9.8m .





I look forward to receiving the proposed drawing of the mats.



Sincerely,



sundefi

and my titile

would it be good enough for this letter? please could you help me to make it better? Thank you.