Q: Can I convert my windows vista home premium to mac software ?

You can't run a Mac OS on none Apple hardware.

In order to run Mac OS X operating system and software, it is necessary that you have a Mac to run it on. It is not possible to run it on a PC.

You can't. OSx can only be legally run on Apple Hardware.  

Any hacks to get it to run on PCs a.k.a Hackintosh, are not supported by Apple, are a breach of the OS EULA, and as such cannot be discussed in these forums.

A modern Mac computer can run a second non-Mac OS X, (windows etc) that

is installed via a utility known as BootCamp. Then a Mac can run Windows... it

also can run other unix based systems.

Also with a virtual machine, it is possible to run Windows programs in the Mac OS X.

The virtualization software is from third party makers that runs in the Mac. So there

are options to open the device to other software.

Good luck!