The instruction is earlier in the thread (around the early 60's range) for one example. Need to type "sudo gainroot", first and then Xterm should report that you have root shell access. You can then type the commands. I used GPE file manager to copy paste the stock, 800 and 900mhz kernels into the /home/user/ directory (just in case). The key is to make sure you have a PC in case you have a problem and need to reflash the "stock" kernel. In that case, you would need a computer to flash (XP or Vista 32 bit OS).