binary compatibility between 2.4 and 2.6 kernels

["Sherman, Michael (GE Energy)" <michael.sherman@og.ge.com>]

Hello.
I have an application, currently running on SUSE 7.0 woth 2.4.4 kernel. I
wanted to move this application to Sarge 2.6.3. I set everything up,
including the same libg++ , however the application fails to retrieve the
serial number of the machine (I don't know what function they used, it's a
closed source program). Could it be because of the kernels? If so, will
installing the 2.4.x that comes with Sarge solve the problem? And is there a
tutorial on how to install a second kernel and add it to GRUB menu?

Thanks in advance,
Mike