I know there was discussion in like 05' of that it couldn't be done but I've recently downloaded an updated OpenXDK and it looks like it has support for alloca now, at least I see a file called alloca.h and there is all kinds of stuff in there with it, I've never compiled anything before so I don't really know how to do it but if anyone could make an XBE with OpenXDK for SRB2 it would be teh ownage.