I kinda thought that reading the file twice wouldn't hurt you. If it gets to be more than a few megs in size, then it may be time to try a more complex method.

By the way, about integers greater than 32K; I think you'll find — let me look it up just to be sure .... yes, the Integer data type is stored in two bytes of storage and can therefore go "from -32,768 to 32,767". But the Long data type uses a full word (four bytes) of storage and can hold values "from -2,147,483,648 to 2,147,483,647". And in Office 2010 there's even a LongLong type that doubles storage yet again (8 bytes, 64 bits) and holds "-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807". So you can probably hold more data in your arrays than you feared.