How to DOWNGRADE kernel

[burraganesh]

Hello Linux lovers i am running on Fedora 9,kernel version is 2.6.25 ,the problem is that i am learning to write device drivers for 2.6.10 kernel.
I downloaded its tarball and followed all the instructions in README in an attempt to install this older kernel.
There are so many warning when i says #make menuconfig ,but finally the screen shows up to customize my kernel,i selected the default actions and exited.
But when i say #make ,again so many warnings but this time error and the build stage just terminated.
Is there a way for me to downgrade my kernel ,i mean install an older version in the presence of new one?.

By the way if successfully installed,i want an option in GRUB to boot either one of them.

Thanks for reading this far,now help me please.

A twist in the tale,i want to do all those steps manually,since i don't have internet connected to my machine.

[devils casper]

Follow instructions for here.
You have to add title block for a new kernel in grub.conf file after sucessful compilation.

title new kernel
root (hdx,y)
kernel /new_kernel_name ro root=/dev/sdax
initrd /new_initrd_image_if_any

[burraganesh]

Follow instructions for here.
You have to add title block for a new kernel in grub.conf file after sucessful compilation.

title new kernel
root (hdx,y)
kernel /new_kernel_name ro root=/dev/sdax
initrd /new_initrd_image_if_any

But the problem is i am not able to compile my kernel in the first place,first tell me if it is possible to downgrade to older version or not?

[devils casper]

Yes, its possible downgrade kernel version. Just follow instructions in the given link to compile it.