google showing hidden files in your os and if you are in windows you go here

c:\Documents and Settings\USERNAME\AppData\Roaming\~coinname

 Once in there you put the .conf file in there. If you can't find it in the package then you can take a .conf file from another coin, copy it into that roaming folder, rename it to taxicoin and edit it in textedit, all you need in it are those add nodes they have posted on the website