[plt-scheme] Incremental GC

I'm using PLT Scheme embedded in a multimedia application, and garbage 
collection is sometimes an issue. I've noticed that the Boehm GC 
supports incremental garbage collection, but I don't know how well that 
would work with PLT Scheme. Would turning incremental garbage 
collection on be possible in PLT Scheme's version of Boehm? How would I 
go about doing that?

Thanks,
Brian

(sorry if this comes through twice, I sent it from the wrong address 
the first time)