Thanks for the reply.

I'm simply using alt+tab. Since I just started dual boxing and I'm still new to it, I've been selecting my character's portrait and choosing the follow option. I've been looking around and reading on here though, if I really end up dual boxing a bit, it looks like there are some better solutions.

Also, I might have figure out the problem. Prior to having problems with following I was running in windowed mode for both clients, but I started having some problems with my gfx card so I changed back to fullscreen mode. Perhaps when I alt+tab the follow command is being broken?