trouble connecting

Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)

I have a Acer laptop that I use for work. I am situated in a remote location. When working from the main office we can connect up to a "I drive" that our company works on. For some reason we have no problems doing this but when the laptop is not plugged into the broadband connection (I Drive) and I'm using it away from the office (or anywhere really) it sometimes when I start up and try to log on it will not let me. There is a error message saying the company domain is not availble. This is becoming a major issue as every second day I have to drive to the office and plug into the broadband connection. Then everything works fine for another couple of days. But as before the error comes up again and I have to repeat the same situation again.