how to change gnome to kde environment?

[SUKHI99]

i hv installed ubuntu 7.10 ....
default it instll gnome environment 'n' i also want to change to kde plz tell me ragading this. i hv installed it from the digit dvd also tell me it consist of the dvd or cd ubuntu version. also tell me how can i chane the environment ftom kde to gnome 'n' vice-versa in any disto.

[anantkhaitan]

During Login, Click on 'Session ' and choose whatever environment you like. you can make it default too.