Ni saya tambah lagi....
First you need to decide on virtualization software - there are plenty of technologies out there such as OpenVZ/Virtuozzo, Xen, KVM, VMWare, HyperV, etc. Some of these software are licensed on a per VM basis, so you should include that in your costs. You would also need some management/billing software.
As for hardware, you need at least 2-3 powerful servers (Xeon CPU, lots of RAM), which is $10-15k. You would also need a shared storage (SAN) if you want VPS modes migrate across servers. You would probably need network firewalls/routers as well.
I would guess initial investments are about $30-50k if you want to make anything valuable.
xda sape nk wat biz vps ni ke hehe kat cg ni pun ramai custumer

paid
tapi kena ada internet provider yg mantap la x tau la kat Msia ni mcm ne..