Here is How To install VMwareTools on a blank Debian Squeeze

* quick and dirty style *

1. apt-get install build-essential module-assistant
2. m-a prepareon some Installation there may be the need to define specific compiler
3. export CC=/usr/bin/gcc-4.3

right click on virtual machine, guest -> Install VmWare Tools

4. mount /dev/cdrom /mnt
5. cp /mnt/VMwareTools* /usr/src && cd /usr/src && tar xvfz VM* && cd vmware-tools-distrib && ./vmware-install.pl
6. press Enter a lot of times
7. reboot

Done!