Convert Edges to Bezier Curve?

Is there are script for this? I have a huge model, and I need a bezier curve to follow a tube, but instead of spending hours making the curve follow the tube, can I just convert one of the edges to a bezier curve to save time? It would be a HUGE help. Thanks so much!!

Nevermind, I found the Edge to Curve script (silly me, it was included in Blender).

I’m pretty sure 2.5 have this feature built-in with ALT-C keys combo (can’t veryfy at the moment).