Can you screen a running programme? [duplicate]

Possible Duplicate:
Can I nohup/screen an already-started process?

GNU screen is great for long running programmes. You can start your programme in it and disconnect and bring your laptop home.

However sometimes I start a programme outside screen and it takes longer than I want. I have no problem with pausing the programme using Control - Z etc., however I don't want to restart it cause then it'll take ages to run again. Is there some way I can move an existing running process into a screen session?

I think the answer is "no".

After having some horrible experiences with poor wireless connectivity and long-running processes, I reflexively run EVERYTHING in screen sessions now. My first command on connecting to a system is nearly always

$ screen -ADR

...and I go from there.