Please Help with Internet Explorer

Is there anyway to make the screen smaller?
I use stickam.com to see my friends and family in other states, but anytime I go into a chatroom, I can't see or scroll to the bar where you write text

Here's a picture:

If you can see, theres no scroll for me to scroll down and see the text box and theres that corner on the right side to let me stretch it out but it won't let me stretch it, even if I maximize the chatroom I still can see it. Is there anyway to change the screen to be able to see the text bar?

And yes I downloaded firefox but forefox wont even let me enter a chatroom, th ok button is too far down in the left and it wont let me click it.

Any suggestions/help is appreciated. Thanks!