Question Alternative For Sendkeys

[Sil]

Hi
I m in need to control an Application from vb.net EXE .I have used Sendkeys to send keystrokes to that application which is not Returning the Success messages neither waiting for that application to complete its process before the next set of keystokes are send .
Presently i have used set of sleep statements to co-ordinate the Flow of keystrokes with that application which is unreliable

Plz suggest me some other alternative for SendKeys and Sleep ...



Thanks
Sil