How delete failed W2000 installation

[Falconeer]

My PC has been getting slower and slower lately so I thought reinstalling the OS would help clean things up. I forgot I have an encrypted HD so it crashed halfway through. Now I am still running on the old Windows 2000 but the failed new one is lying around.
Does anyone know how I can get rid of it?

[feigned]

Boot up with the install cd, delete partition, create a new one, install windows.

Backup what you want to keep before doing this though.

[suRoot]

Why are you installing 2k ontop of 2k? it makes no sence!! but any way, if you feel you NEED to, then do as feigned said, but i highly recommend formating the partition you are intending to install the OS, it's good practice!