I re-installed the operating system in a computer that had 2 CD-Rom drives (one a DVD burner), a Zip drive and a floppy drive. After loading all the other applications I noticed that the hard drive took on the letter "F" instead of "C". I have heard that a Zip drive can cause this. Are there any reprocutions that will be caused by this? Can I go into Computer Management and change the letters around without having to re-install the whole system?