How to host mutiple website in single ip address

Hi Friends,

i have 3 sites like Samp1,samp2,samp3..

now my url like www.samp.com

i need its like www.samp.com/samp1.....its open samp1 site
and www.samp.com/samps.....its open samp2 site
,e www.samp.com/sam31.....its open samp3 site...

plz any idea about this share with me.