Good Tutorila site, and if you don't get it....u can download the tutorial and copy and paste what he did ....wink wink 
http://users.1st.net/kimberly/Tutorial/tut.htm 
has all the textures, walls and stuff like that grass etc.. 
http://homepage.eircom.net/~kdja4/textu ... xtures.htm 
this is how you make it a .pk3 
http://dynamic4.gamespy.com/%7Emap/moha ... ic_pk3.php