Optical Character Recognition software for use with documents which, once scanned, you can edit in a word processor.
The January 2004 edition of PC Advisor's cover disk had a full copy of ABBYY Finereader Pro 5.0, but I also downloaded (or at least my son did for me on broadband!) the large full update for the program from ABBYY's website.
It's an excellent program and generally scans in documents as they appear, including font styles.
You didn't actually state in your thread that you "still needed to buy a scanner", but they are cheap enough these days - the Canon models are very good but a little dearer than some alternatives.
If you intend to use the scanner on a regular basis then it's worth paying the extra, but you can get a basic model for around £30-£35.
Going back to the beginning ... if this is a one-off task I wouldn't bother trying to computerise it. You might as well just transcribe the data from the pages into Excel manually.
If you do scan the pages electronically, and then get some OCR software to convert them into editable data, you'll still need to check every bit of data for errors because OCRs are not 100% accurate (depends mainly on the quality of the original page).
If this is going to be a repeat exercise, can you talk to whoever originates the pages and get them to give you electronic copies as well as or instead of the paper ones? Then, if they're not already in Excel, getting them into Excel will be relatively straightforward.