will any of these work? These are from home depot. I was also looking at the router add on for the dremel since I currently own a dremel and not a router. Any ideas and thoughts on this would be greatly appreciated.
I don't think any of those are what you're looking for. You need a slot cutting bit. Take a look at some of the links posted above. They got pictures and everything.
When I was in Lowes the other day I saw one but I don't know if they had the right size. I haven't looked at Home Depot. Neither one lists it on their website (both their websites suck IMO).
I can't say I've tried the Dremel but it seems like a lot of work with that little tool. I would think it might be difficult to keep it flat on the surface while cutting.