Integration Server 4.6 Installation

I was able to down load the Integration Server Copy from site. But for reasons unkown to me i was not able to install the same, I
am not able to see any of the install shield setup screen after the popup “perparing for java virtual Machine”. I am trying to install the
same in the following environment— WindowsNT work station, JRE 1.3, JRE 1.2 and JRE
1.4. I Would appreciate if anybody could help me install the same.

I had a similar problem. But the install screens finally came up after 30-45 minutes! I thought it was hung, so for several times I either killed it or rebooted. But just waiting was the solution.