need script help

Hi, just starting out in the scripting world. I need to know how to check for version of apps. here’s what I’m trying to do. I need to check two files

/h/NETSCAPE/VERSION (i.e. 1.0.0.1)

/h/NETCOM/VERSION (ie 1.1.0.1)

if it’s /h/NETCOM/VERSION then I need it to do add a plug in. if it’s /h/NETSCAPE/VERSION I need to continue.

Thanks