The short question is: How do we let MSN or Yahoo Messenger set us to be Invisible or Offline when we are idle for half an hour or an hour?

The reason is: if I am on 24 hours a day, some people see me as weird. Some people see my value as low, because I am always there.

There are ways to set me to "Away" or "Busy" after 10 minutes, but there seems to be no way to set myself to invisible or offline after 1 hour.

As I am a software developer, I am very used to turning the computer on 24 hours a day. (for example, for checking email for urgent fixes, and fix issue and push to web server). We don't turn off computer usually even when we sleep, because we may sometimes can't sleep yet and come check on the computer, or wake up in the morning and immediately need to check if everything is ok.

But, my MSN and Yahoo Messenger is always on for 24 hours a day, and I found that some girls start to ask me why I am always there 24 hours a day (even though they see me as away or busy, their feeling is that I am always there).

What's more, I found that since I am always there, my value actually drop in their eyes, because hard to get = high value, and always there = low value. Some people feel me as having nothing much to do, always in front of computer, or what is he doing in front of computer so much? Now since it is my job, and I need to read emails once in a while, I am in fact in front of the computer more than some other people. I am in front of the computer maybe 10 hours a day, far from 24 hours a day. Is there an easy and automatic solution to this?