Not a whole chapter, just a few pages. There are monster classes for ghoul/ghast, mohrg, mummy, vampire spawn and wight.
Right after 3.5 Dragon also ran an article on half-undead in 313. I find half-undead terribly silly and wouldn't be able to take an adventuring party with one seriously, but I think I'd be more open to an actual undead PC. This is probably largely due to playing video games with a token angsty undead with a heart of gold.
Dragon 322 also had 3 different shadow template monster classes, at least one being undead.