If the domains in your work network is different from those on the Internet, you should be able to configure a DNS server to do so.
However, it may need some time to learn how DNS works before you really understand how to configure it.
Try to read a bind documentation.
Basic configuration is as below: 1. install a DNS server (say bind) on your PC. 2. configure it as a recursive server, resolve domain1.com, domain2.com recursively from the DNS in your work network (assumes domain1.com and domain2.com are domains in your work network), and resolve others recursively from the Internet DNS.