I Want to My Own PC

I want to my own PC!!! It is because now in my home, there is only one personal computer, and my sister and I use a lot of time. Both are university student, and using PC to search some source and to write report. However, there is only one PC in my house!!! It is so uncomfortable... :-((( So I want my PC!!! Now, I do not have enough time to search and buy a PC, so I will buy during summer vacation!!!!!