Unable to install odesk team

Hi .
I am having a problem when installing odesk team application.
I am a freelance worker on odesk and i have recently changed my os from xp to win 7.
In win xp i installed the odesk team set up, and it worked perfectly.
But in windows7 while downloading the software in win7 it take long time and does not install properly.
Actually the software is only 3 mb but it downloaded more than 31 Mb.
I need a solution for this.
