document updated 15 years ago, on Oct 23, 2009
Unfortunately, Sametime / Lotus Notes IM uses FlashWindow() instead of FlashWindowEx() to flash the window, so it's not so easy to stop its blinking.
C:\Program Files\lotus\notes\nimui.dll calls FlashWindow()
C:\Program Files\lotus\notes\nimuiu.dll calls FlashWindow()
However, there is the option:
File > Preferences > User Preferences
Instant Messaging > Options > Blink the message window
However, this removes ALL notifications. It would probably be better to implement the DLL injection idea.