Hi guys I used to use ePSXe as an emulator when I accidentally deleted a file I thought was part of another program it stopped working. I have tried to reinstall it numerous times but everytime I unzip it now and try to open the program a system error comes up saying the program couldn't run because zlib1.dll is missing from my computer and totry re-installing it. I've tried using other emulators and they all give me some type of error like that. I'm using a relatively new hp. If anyone could help me out it would be awesome I miss playing all the old psx games.

windows 7 premium 64bit
hp pavillion d7 notebook
4038mb ram
directx ver 11
AMD Phenom II N830 tri-core 2.1ghz