setting shmseg?

[Adam Russell <ac.russell%live.com@localhost>]

I am writing an application which makes heavy use of threads and shared
memory. It seems I am hitting the shmseg limit for max shared memory
segments per process.
`ipcs -T` tells me that this is currently set to
    shmseg:     128 (max shared memory segments per process)
Is this changeable in some way or is it hardcoded in the kernel
someplace (thus necessitating a kernel recompile :( ) ?
If it is changeable than how?