These are here

http://www.3dfxzone.it/forumzone/topic.asp?TOPIC_ID=6056&FORUM_ID=40&CAT_ID=25&Topic_Title=Tutorial+su+3D%2DAnalyze+by+Devilman&Forum_Title=Hardware+e+software

and here

http://www.3dfxzone.it/forumzone/topic.asp?TOPIC_ID=6231&FORUM_ID=40&CAT_ID=25&Topic_Title=Tutorial+su+3D%2DAnalyze+by+re%2Dvoodoo&Forum_Title=Hardware+e+software

......they are in italian......but with google translator...

I remember that 3D-Analyze is a pretty tool that allows using a non TnL card (as Voodoo3/4/5) running the latest games which require hardware TnL capabilities.