Error: File 'pdfpages.sty' not found

Question

I'm trying to compile simple thesis example using TexMaker with MiKTeX 2.9. I need pdfpages package in order to include pdf as the title page. Without the following line the code compiles fine:

\usepackage{pdfpages}

With this line, every time I try to compile I get the following window:

I tried many different repositories, but it always ends up with

Error: File 'pdfpages.sty' not found. ...

So I decided to install it manually, downloaded this package: http://www.ctan.org/tex-archive/macros/latex/contrib/pdfpages

I've uncompressed the package in the following directory: C:\Program Files\MiKTeX 2.9\tex\latex\pdfpages and then I run these commands from that directory:

> latex pdfpages.ins
> latex pdfpages.dtx

After that, more files were created in that directory (including pdfpages.sty). But TexMaker still can't detect those files. Still shows me the "Package Installation window".

Minimum example code:

\documentclass[a4paper,12pt,twoside]{article}
\usepackage{theorem}
\usepackage{graphicx}
\usepackage{pdfpages}
\includepdf{title_page.pdf}
\begin{document}
test
\end{document}

I really couldn't find any solution to this problem in Google nor in StackExchange database. How to get it working?