hello
I want to make my winApp start at the right side of the scream,i want to use form.location but i dont know the wide
of the scream.

or is there any other way to put the winApp at any position
of the scream.

Check this out:
http://msdn.microsoft.com/library/de...oundsTopic.asp

There is a class in the System.Windows.Forms namespace called SystemInformation.

This class has a number of members for getting screen details, it depends what you want. The members your interested in are:-

WorkingArea
PrimaryMonitorSize
VirtualScreen

Depending on your solution one of these should give you what you need.