What is the path of an MTP device in Windows?

I am ruing Windows XP and have a phone mounted through USB by MTP.

In Explorer, its address is:

My ComputerSAMSUNG-SGH-I547PhoneDCIM

I would like to execute a command line command such as

explorer "My ComputerSAMSUNG-SGH-I547PhoneDCIMCamera"

so as to quickly go to the Camera folder. (Right-clicking the device or anything in it does NOT provide a "Create Shortcut" dialog.)

But "My Computer" is not a valid PATH in Windows. Unlike USB flash drives, it seems the phone mounted by MTP does not get a letter drive name.

So, what is the path of an MTP device in Windows?

If the answer is there is no command line path, is there workaround?