Internet disconnects when computer enters stand by

That is usually what happens.  If this is a desktop PC, The recommendation by the Dell moderator and most of the forum "experts" is to NOT use Standby on a Desktop PC.  It can cause many and varied problems.  Some may have used standby for a long time without problems but then all of a sudden develop them.  Standby (and Hibernate) were designed for laptops to conserve battery power.

The universal recommendation, including the Dell moderator is to ONLY "power off" the monitor and hard drive at whatever time interval you want - nothing else.

acutally I should clarify. The computer disconnects from the internet sometimes when im using it as well. I was just saying the computer disconnects after its been idle for a while. The way I fix it is that I have to restart the computer. Do you think it might be a dsl modem problem or a computer problem?

my apologies.

Hard to tell which one it is without a little more investigation.  Are you using a USB or the Ethernet connectin for the Modem (if you have the Ethernet that is the preferred connection as USB can be problematic and is slower than the Ethernet).  Do you get any other indication other than it's not connected?  If you have Ethernet can you do a "Repair" by accesing the Ethernet panel in the Control Panel/Networking? 

Make absolutely sure nothing is going into a standby or hibernate mode. 

by ethernet.

anyways, I just installed a new network card (i happened to have a brand new dlink card lying around), so Ill see what happens.