import a .out file

Forgive my complete lack of knowledge here, but I have a bit of a problem!

I'm in the middle of moving a website from one server to another, and it
happens to be that POSTGRESQL is not available on the new server (MYSQL and
MSSQL are the only ones supported).  I have been given a .out file which
appears to contain PostGre-specific SQL code.  I tried importing it directly
to MYSQL without success -- I knew it wasn't going to be that easy, but I
had to try :)

I wasn't able to find anything specific about .out files using the search
feature on postgresql.org -- is this a standard format for data dumps?
What's the best way to import this data, and eventually get it into an MSSQL
(preferred) or MYSQL (if it's easier)?

Thanks in advance!

Jonathon