Not necessarily. If PHP is the only server side script you can use and
you're not willing to change hosts it's about all you can do.
what forum is it and what kind of server are you on?
Regardless, I'd recommend you contain this forum in a FrontPage subweb.
import the package you got (just the main folder and it's contents) into
FrontPage: file/ import/ folder,
then when it's in your site, right click it and select: convert to subweb.
now, it'll stay out of the way during normal publishing operations and won't
make a mess of your main site.
--
Chris Leeds,
Microsoft MVP-FrontPage
ContentSeed: great tool for web masters,
a fantastic convenience for site owners.
http://contentseed.com/