Memory "Hacking" OR "Scanning"

[Watru]

Hello everyone I was hoping someone with experience in working with memory can answer some questions.
Using C++ on a Windows System. Am currently in the process of making my own "Cheat Engine".

And I have done some work using Win32 API CreateToolhelp32Snapshot(), VirtualQueryEx(), ReadProcessMemory().
And my scanner set with SE_DEBUG but its not getting access to every thing.
I would like it to print every active process\ service on the system not restricted to the user. (Don't know if just Admin Privileges is needed).

A friend of mine mentioned Process Status API < MSDN link. So how can i best acomplish this? Am a noob and stile lerning but any and all infromation is great, and well aprichiated. Since i dont know all the difrent methods and sutch please point me in the right direction, for making a greedy memory scanner.
Thanks to anyone how takes the time to read.

Cheers
WetCode

[Watru]

No one can tell me of any methods to get access to processes and retrive data?
With ore with out the Function Calls above?