Why do I get tons of files after I install Firefox?

After I install any firefox Version I get Shortcuts and files. Here's a list: defaults dictionaries accessibleMarshal webapprt uninstall searchplugins modules extensions components application blocklist breakpadinjector chrome.manifest crashreporter crashreporter crashreporter-override d3dcomplier_43 d3dx9_43 dependentlibs.lisy freebl3.chk freebl3 gkmedias install mozjs mozglue mozalloc maintenanceservice_installer maintenanceservice livglesv2 libegl mozsqlite3 msvcp100 msvcr100 nspr4 nss3 nssckbi nssdbm3.chk plugin-container plds4 plc4 platform omni.ja nssutil3 nssdbm3 precomplete removed-files smime3 softokn3.chk softokn3 ssl3 updater xul webapp-uninstaller webapprt-stub update-settings updater xpcom

I think they are ALL parts of Mozilla and I want to get RID of the shortcuts/files from my computer (All files in the list are icons)but whenever I send 1 and try to open Mozilla firefox it says 'Error: couldn't find XPCOM"