Two dimensional hash perhaps? Where the first column is the first dimension and the second is, well, the second.
E.g. while(<FH>) { ($col1, $col2) = split(/$delimeter/, chomp($_)); $blah{$col1}{$col2} = 1; } Hope this helps. ________________________________________________________________________ This email has been scanned for all viruses by the MessageLabs Email Security System. For more information on a proactive email security service working around the clock, around the globe, visit http://www.messagelabs.com ________________________________________________________________________ -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]