So I take it that, to mean that I can't get it to work at the 2600 speed, right?
Well if it's not a 2600 then no, but I'm not entirely sure what you're asking there. If you don't know what you're doing then just don't bother messing with things like the CPU FSB because you could really do some damage.
Regarding your other question I'm going to have to ask you to not hijack this persons thread and to not double post because I've seen you've already posted that question in it's own topic so I'm going to erase it out of your above post
Plus I answered in that other thread