I made a OSDev toolset for C++BuilderX. It compiles OSD without a problem. Of course you need to download C++BuilderX Personal Edition from Borland, also NASM (I guess if you are here you have it already). If anyone wants to try it download the toolset files from:
http://www.spectron-msim.com/programs/os_toolset.zip
I also made a new osd.zip (just added C++BuilderX project files)
http://www.spectron-msim.com/programs/osd.zip
To compile just load the project group "osd.bpgr" and select Rebuild Project Group" from the "Project" menu.
I still need to add some flags to LD so it shows on the Borland IDE.
Any questions just e-mail me.
Faw