I want to buy a pc. What u recomend me?

Depends on what your purpose is. If you use a lot of applications at a time. I would suggest you get at least a 2 GHz. Get a minimum of 518 RAM, and hard disk space depends on how big your files are. Normally 40 GB is well enough. Unless you have a large amount of files (like me) I have 160 GB for my desktop. Like I said, depends on what you going to use the computer for, it varies :) and depends on how much you would want to spend on it.