bid invitation output related

Hi guys,

I am able to send the bid invitation to the bidders.The output medium is email.It sends the bid invitation in .pdf format. (we have implemented a smartform)

Requirement is:can we send it in say word or excel format instead if .pdf?

Reason being,the bidder can download the form, enter required information in the word or excel doc and email it back.

Any solution/bright ideas?Please share your inputs.

Thanks

Trey