What I should see in xp process tab in task manager

Just wondering what I should see with no programs running. Nothing wrong just wondering what the typical computer has running. This is what I have:
iexplore.exe
taskmgr.exe
explore.exe
svhost.exe
svhost.exe
svhost.exe
svhost.exe
isass.exe
winlogon.exe
csrss.exe
smss.exe
System
System Idle Process SYSTEM
Im not running a netowork or anything other than internet explore.Im new to XP and im curious as to what all these processes are for. THX