ASP-Based Webmail: Include Original Reply Formatting

I'm building an ASP-based CRM system; a user sees the original
message, posted from the database and can hit a Reply button to
generate a TEXTAREA field on the next page that houses the original
messages and allows them to type a reply and hit a "Send" button.

The original message from the database includes natural line breaks,
as submitted--it doesn't contain any HTML breaks.

I would like to accomplish two things:

1) Add a "> " before each line of the original message, as contained
in the reply

2) In conjunction with the "> " preceding each line, break the
original messge string into logical line lengths that fit inside the
textarea field and don't wrap.