I have cheese.mycompany.com - 1.1.1.1I want to go*.mycompany.com = 1.1.1.2without effecting cheese? Will this work, just having two seprate DNS entries?
If I specify a wildcard DNS entry, will it override any specific values?
dns
The wildcard does not override any specific values.   It acts as a catch-all.  If there is no otherwise specified record, the wildcard record gets used.You can have both cheese.mycompany.com pointing at an ip address and a wildcard for everything else.I do this on my site.  I use both A records for specific IP addresses for subdomains, and a catch-all wildcard.  They are completely compatible.