newbie needs help with security cameras in business

["stryped" <stryped@xxxxxxxxxxx>]

x-no-archive:yes

I work in a manufacturing plant that currently has an outdated time
lapse vcr and security camera system. "black and white". We dont have a
large budget but I would like to replace the vcr with some sort of dvr.

What are the pros and cons of a computer based dvr system vs a stand
alone system?

Also, how far inside a medal building can wireless cameras go?

Can we build our own system out of a pc?

I appreciate any feedback!