Eject a USB device

I would Like to eject a USB device from C#, I have the Drive Letter and have found a function in Kernel32.dll (CM_Request_Device_Eject) that can , if provided with an InstanceHandle, request that the USB device is removed.

I have found the UsbEject sample on Code Project on the net but that is dependent on loading the entire device tree into memory and then retrieving that way, I am looking for a/some functions that given a drive letter will return me a InstanceHandle.

If anyone has solutions that differ to the above I would also be interested
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S31B1Asked:
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ColemssCommented:

Make the last column not sizeable and Force it to always stretch to the end of the grid.
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ColemssCommented:
Sorry about that wrong post,  But im looking for your answer right now :-)
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ColemssCommented:
This is another code project sample.
http://www.codeproject.com/KB/system/DriveDetector.aspx

More to come
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ColemssCommented:
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