OK first thing first...did you set up a separate file of EQ2 to unzip the beta file into?
if you did make a copy of your EQ2 file and unzipped the beta file into the copied EQ2 file and then depending on what version of windows you are running right clicked on the EQ2beta exe file did you click "run as administrator" ?
I run vista and found that you have to do things in a certain manner to get it to work...lemme know how it goes...when I finally loaded mine for the third time after it got stuck it was a thirty minute download...down from the original three hours it said it would take....

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"Behold, I am sending you like sheep in the midst of wolves; so be shrewd as serpents and simple as doves"

Enter through the narrow gate, for the gate is wide and the road broad that leads to destruction, and those who enter through it are many. How narrow the gate and constricted the road that leads to life. And those who find it are few.