Blix contact form

Hay there,
I have taken the blix contact form guts to use in a static site. All works well, as it should.
However, I was wondering if there is any way to re-direct the confirmation from returning to the blog layout

ie

contact form page_id=4 (before submit)

contact form page_id=4 (after submit)

to a page on the static site

for example

contact form page_id=4 (before submit)
to >>>

cheers.htm (after submit)

Not great with the php, but any pointers would be appreciated.
Thanks. Paul