Sorry trying to be as concise as possible without revealing the function of the code and such, what with nondisclosure agreements and such. Basically I just need the script to search a file for a word and append text to the following line in said file.

So this? Its a common pattern;

while(<$in>){
   print $out $_;
   if( /word/ ){
      print $out scalar <$in>, "APPEND";
   }
}
close $in;
close $out;
rename $outfile, $infile;
[download]

Having a gander at How do I post a question effectively? and How (Not) To Ask A Question might help you help us help you :)

That might do it, I will plug it in and see. Thank you very much.