You should be able to import each video into Nero Vision and create a dvd with a menu to select the one you want to play. Don't try to cram more than 2 1/2 hrs of video onto one single layer dvd though. If you need more than that on the disk, you should use double layer dvds (Verbatim brand only), and set the output in Nero to DVD-9, rather than the default DVD-5 size.
Are the vcds on disks, or have you already ripped them to the hard drive? Renaming the file once it is on the hard drive should not adversely affect the video, as long as you use the same file extension.