THE 6 1/2-POINT spread here might be a lot for anEagles offense that didn't establish much of anything in its opener. What the heck, though, I think the Birds are going to step up tonight, and if I'm wrong, I'm wrong. (Homerish? Well, I was the only Daily News writer to take the Packers last week.) And I don't think last week's strong defensive showing was a fluke - I really think this is a talented if inexperienced unit. Yeah, this would be easier if Lito Sheppard was playing, but the big thing is going to be stopping the run, and that isn't Sheppard's job.