Hi, is this real VPS where we can install any software that we want? For example, I want to install the current PHP5 beta. Can I do this w/ any package (all are VPS, right?)...
With the proviso that you don't have root access... yes, you can usually install what you want.
Some parts of the VPS are owned by root, and you will need to install a parallel set of files in those cases. Perl, for example.
You can install any type of software/programs that you want to use for your website. We cannot provide technical support for them, but you are free to install and use them.