raid45 working on Feisty ?

[Larry Wilson]

I have been trying to get dmraid to work on Feisty for a nvidia nforce
mainboard with a raid 5 array configured (not boot). I have read through
the bug report 97655 which appears to need kernel 2.6.22 to work, so
looks like I need to install this kernel on Feisty (a backport I guess).

So how do I update Feisty to a 2.6.22 kernel? 
And patch this with the Heinz Mauelshagen dm-raid45 patch?

Any help please ASAP.