This one is pretty good but the statistics part of their site is having a problem at the moment
http://www.racingone.com/
... You can also try here
http://www.theinsidegroove.com/nascar-winston-nextel-cup-driver-stats-statistics-charts.php
The site racefan gave is an excellent site
... As far as getting statistics in a text format good luck. You might try setting you browser up to only surf the web with text format only and see if you access NASCAR.COM (or other sites) in a text only format without active x, java, script, flash, or images being displayed. You also might try a text based web browser. http://en.wikipedia.org/wiki/Lynx_(web_browser)
... Try to copy and paste the charts into Wordpad. It will be text then.
... I tried to copy and paste the charts into Wordpad and it worked. What you do is save it as a "text document" instead of "RTF" (rich text format) and it will remove the chart boundaries leaving you with only the text. You can then copy and paste and arrange that info how you want it. It isn't exactly what you asked for but it is something you can still work with.
... Something you might consider when compiling your information is a free software called IMS Web Dwarf http://www.virtualmechanics.com/products/dwarf/ . This software allows you to create html pages (web pages) and you can enter text and drag it arround without having to retype it into another text file. It is real usefull in creating web sites and getting things organized. Once you get you information in order you can preview the web page and then save it to the desktop (or where ever)