Te recomiendo encarecidamente que las instales en todas máquinas host que contengan máquinas virtuales, de todas formas te paso un link de la página oficial de VMWare (en Inglés) donde te explica perfectamente sus funciones:
gracias lo miraré detenidamente.
It is very important that you install VMware Tools in the guest operating system.
With the VMware Tools SVGA driver installed, Workstation supports significantly faster graphics performance.
The VMware Tools package provides support required for shared folders and for drag and drop operations.
Other tools in the package support synchronization of time in the guest operating system with time on the host, automatic grabbing and releasing of the mouse cursor, copying and pasting between guest and host, and improved mouse performance in some guest operating systems.
The installers for VMware Tools for Windows, Linux, FreeBSD, and NetWare guest operating systems are built into VMware Workstation as ISO image files. (An ISO image file looks like a CD-ROM to your guest operating system and even appears as a CD-ROM in Windows Explorer. You do not use an actual CD-ROM to install VMware Tools, nor do you need to download the CD-ROM image or burn a physical CD-ROM of this image file.)
When you choose VM > Install VMware Tools from the VMware Workstation menu, VMware Workstation temporarily connects the virtual machine's first virtual CD-ROM drive to the ISO image file that contains the VMware Tools installer for your guest operating system and you are ready to begin the installation process.