XNeat is an effective utility in the must have list. XNeat gives you full control over your Windows by extending it's features:
1) Stay On Top: Always On Top windows will never be overlapped by other windows.
2) Send To Tray: Send any window to your system tray (beside windows' system clock).
3) Roll Up / Down: Shrink Windows.
3) Transparent Windows: Controls windows' transparency.
4) TaskBar Manager -Arranger-Sorter: Arrange taskbar's items