I rooted my phone and installed the superuser zip. everything worked great. i was removing programs with titanium backup and I must have accidently removed the people or contacts app to view all my contacts i looked through the system/apps/ folder but could not find anything that looked like what i wanted. i may have over looked it though. please help me to reinstall this app.
Here I pulled all the contact and people apk files for you. There are 4 of them and one is a widget since you were not SPECIFIC on what you deleted. Install them all and hopefully you will be golden. It wont hurt to install over one if its already there.
ContactsProvider.apk, CSPeopleSyncService.apk, HtcContacts.apk, and htccontactswidgets3D.apk
Good luck its in RAR format so use winrar or such to extract.