Thanks for the suggestions, guys. I have TAB set to not pass, so I don't think it's to do with alt-tab'ing. I'll give the macro zanthor suggested a try.

Any ideas about the second issue with:

/script AcceptGroup();
/script AcceptQuest();
/script AcceptTrade();
/script RetrieveCorpse();
/script RepopMe()

I'm not totally clear how and when I'm meant to be applying that one to achieve the desired effect.