After looking at the logistics of running component from the 622 into the wall then up thru the attic then back down to my kitchen, I decided for the time being to forego doing this. I will just have to settle with SD on my new kitchen LCD since I do not want to hassle with running the component cables. Anyways, can I use a splitter to split the signal running from the 622 thru my coax to TV2 (bedroom TV) so I will be able to atleast watch the same thing in my kitchen as TV2 is watching in the bedroom?
Yes, a standard splitter can be used, you don't need anything expensive.