Computer losing connection to internet

Hardware:

D-Link 614 Router
4 x computers connected through router. 1 is wireless ( no problems ), 2 are Win XP Pro ( no problems ) and the last computer is using XP Home ( this is the computer I am having problems with.) The XP Home computer will lose its ability to get on the net once the computer goes into the screen saver and then back out again or if the computer doesnt use any internet traffic for a few minutes. The adapter doesn't show itself unplugged. I am kinda' confused on this, anyone help?

The Zone Alarm lock when screen saver goes active is turned off.
When I turn zone alarm off I can get right on the internet.

 

Look in the program list in ZA and see if the screensaver is listed, if it is make sure it has trusted zone access.

 

Its definately got something to do with ZA. Wookie, I will try what you told me.

 

I figured out what the problwm was. Basically, I had to set ZA to allow IE and OE to access the internet.

 

I thought I had it fixed but my woman is reporting that her computer is still having troubles.