Cannot access the yahoo mailbox

[ITlover]

There is a network of computers and 2 winxp computers are using internet service from 1 winxp computer that has dial up internet service. In other words we can say that the computer with dial up service is sharing its internet with the 2 computers and these computers are in a work group environment and are connected via switches.

I am able to access my yahoo account on 1 computer but cannot access it on the other computer. When i sign in and go into compose to write an e-mail ,i only get to: and subject : field but the text field where we write our messege doesnot open .

I can see other buttons on it but the compose page doesnot open completely,i have refreshed the page several times, and signed in again but the same problem remains.

I donot face this problem on the other computer.

What could be the reason for such problem?