I also get the tiny window upon startup that just says welcome. When I installed it on my first computer I played around with it for a few minutes clicking double clicking etc etc and finally just out of the blue the window resized to its proper size and I was able to proceed with the install. God only know what I did in order to get it to resize...

LimeWire: Why the **** dont you just make the initial screen resizeable so we dont have to put up with this. Im trying to install limewire on my second computer and it cant get past the first install screen because the window is not big enough for me to press the "next" button and i cannot resize the window!