Theme installation

[nateb]

Hello all!!

I just installed SMF on my site.  I don't want to use the default themes and would like use a different theme.  I have downloaded a theme or two that I want to use and modify, I have FTP'd them into my server but I'm having trouble with the forum software recognizing them.  I get an error message saying something is wrong with line 718. 

I'm sure there's something simple I'm doing wrong that I'm just not aware of.  Can anyone give a pointer or two? 

Much appreciated!!