How to temporarily set kernel version for software install script?

[sport]

I am trying to install some software that has an install script that
calls uname to find kernel version info.  I have a 2.6 kernel, and need
to temporarily change it to 2.4 in a root shell to perform the
installation.

Can someone tell me how or what command I would use to change the kernel
system information reported by uname?

Thanks