#2 Initial Errors

[Anonymous]

I am running IIS5, PHP4 & MYSQL.

After I install A2Z, following all the instructions. When I
load up the first page I get the following error plastered
all over the page:
"Undefined variable: ContactID in
c:\inetpub\wwwroot\a2z\programs\master.functions.inc.p
hp on line 31"

I have tried to de-bug this but I have exhausted my
talent. I have even removed all user/pass to the
database incase that's the reason but still nothing.

Can you help?....I'm sure it's something simple I've
overlooked.