[1.0/1.1]

Hi,

i have a windows application which is coded in vb.net. my application has a button,on clicking this button i get a chat form. This application runs perfectly using Windows 2000 OS, but when i try it with Windows Vista ,i get a black screen window first .Only on a double click i get the actual window. Is this due to some special feature of windows vista?? how do i remove this problem so that i get the actual screen in the first click itself??

Kindly help me with the answer...
Thanking you
sona