Problem when I run application on other computer

Hi all...
I'm beginner in c#, And I completed application on c#.net 2005
With SQL server.
And run it on other computer(computer has):

1- .net framework 2.0
2- SQL server 2005


But I found big problem, Application show me this  message:




I don't know what is the problem....

Please help me..


Regards