I can't find a package manager on this computer (VectorLinux 5.8 Std Gold). The reason I was asking about KDE is that my other machine (dual-boot XP/Mandriva 2008) has it and I LOVE how easy it is to download and install programs. I especially like how MCC (Mandriva Linux Control Center) "Manage Software" lets you know if there is additional software (such as libraries, etc.) needed for the program to run. I realize Vector, being an offshoot of Slackware, is a little more "hands-on", but with me being so new to the Linux world, I would really HATE to have to repeatedly re-install this beast everytime I log into "root" and scramble something important, just because I wanted a game!
If XFCE has a package manager, and it is just not showing up somehow, please, someone let me know! I would love to use that. I CAN use CLI but there is also more of a possibility I could leave out an important file (and have to spend 2 hours searching for it online) OR overinstall, or any other possible negative outcome. I also want to have a more 'well-rounded' knowledge of Linux, and not have to rely only on CLI or GUI.