Add an X11 server

First make sure that your kernel supports "userspace software suspend". If it doesn't (as might be with a homegrown kernel), then reconfigure your kernel to include CONFIG_SOFTWARE_SUSPEND=Y, recompile, reboot.

Now, you can update your apt using

apt-get update

Now run

tasksel

Under Choose software to install, remove all asterisks except for "desktop environment". When you select OK the system gets going. That's it!