I have recently installed Debian Squeeze Testing and since I recently moved from Ubuntu 10.10 Maverick Meerkat (which has 2.6.35), I wanted to install it in my Debian Squeeze (which has 2.6.32). However, compiling kernel is time consuming and tiresome, I decided to use the Ubuntu Kernel Mainline PPA like I always do. I navigated to the latest 2.6.37 directory (which is v2.6.37-rc1-maverick as of today) and downloaded the following files:
linux-headers-XXXXXX_all.deb
linux-headers-XXXXXX_i386.deb (if you have 64bit, choose amd64 version)
linux-image-XXXXXX_i386.deb (if you have 64bit, choose amd64 version)
Also, if you are not using Ubuntu, you may need to download wireless crda package from maverick packages.
After downloading, install in the following order (using dpkg or gdebi):
wireless-crda
linux-headers-XXXXXX_all.deb
linux-headers-XXXXXX_i386.deb (if you have 64bit, choose amd64 version)
linux-image-XXXXXX_i386.deb (if you have 64bit, choose amd64 version)
Now, reboot and you should get booted into a new kernel. If you have problems booting into the new kernel, simply boot into the old kernel and remove it via package manager.