Dear sir

I have installed win2003 enterprise edition on my PC

Priveously it was xp proffetional. My usb harddisk is detecting in win-2003 but it is not showing in My Computer.But it was showing in Win XP.
What I have to do for this Problem.

Give me the solution as early as posible.

Most manufacturers have good support docs on their websites. For a starter, check the info for your make and model HD to be sure that it can be used with your OS.

If you have trouble finding it, tell us the make and model of the HD and we'll see what we can come up with.