The video software (from acer) you have installed is not an alternative to flash, it is a video player of some type (the same sort of thing as windows media player or vlc) it will not help with online videos. Unfortunately there are more-or-less no alternatives to flash for watching online flash plugin based videos, sites (like parts of youtube) have startd to move to html 5 players which don't need a plugin at all but flash is still widely needed.
There are three ways you can solve your problem with flash
1.use google chrome, this has a built in flash player, it's still flash but you don't have to worry about it as a separte program as it is witin google chrome
2.download the flash plugin for firefox
3.download the flash plugin for IE
All those options are free, but they are not truly alternative to flash.
Vieos being watched offline (things on DVDs or on your hard drive) should not be flash based and if the acer software you have wil not play particular video files you have then VLC could be used, it is free and open source.
As for the firewall i am not familiar with the brand you currently have so know nothing about it, but If for some reason you think it needs to be changed from the current one remember that windows has one built in.
Edited by rp88, 09 January 2015 - 05:22 PM.
Back on this site, for a while anyway, been so busy the last year.
My systems:2 laptops, intel i3 processors, windows 8.1 installed on the hard-drive and linux mint 17.3 MATE installed to USB