Pics wouldn't open for me so I'm probably not much help. However, I'm pretty sure the 2.5L valve cover for the TJ is the same as the YJ...it's the same engine. Either way, the PCV valve shouldn't cause it to not start because I know there are people who have driven without one for many (unrecommended) miles. Is it cranking at all? wouldn't ask...but I've seen it happen: Did you re-connect the negative terminal on the battery after installing the new valve cover?
Try uploading the pics to photobucket and posting the IMG code here, the pics should show up then (unless my work computer just doesn't like google docs and everyone else can see them...)