Newbies Installing 9.0

I've got a computer store guy who's doing an upgrade on my computer. He knows practically nothing about Linux but wants to learn. I've used Mandrake 8 & RHL 9, but only know a little, graphical basic stuff. Goal is dual-boot WinXP and SUSE 9.0 Personal, which I bought at retail in a box. Is there anything we/he need to know/do other than insert the disc after he installs XP and assume/hope YAST will prompt...? Should we check compatibility, do other stuff first, panic about something else??? I *really* appreciate your help. -M!