On what are you setting up your VPS ? You have a dedi or you just want to run it local ?
If its local i suggest you use hyper-vm since its free and you have plenty of tutorials to go around, if you have a dedi than install solusvm, its also quite straight forward/easy to menage with ready templates and it also works on centos 6*.. You have a 15 day trial with it also to test around.