Autorun.dll could not be loaded Error code (0X3E7) or sometimes (0XC1).

I purchased the windows 7 family pack from Wal-Mart.  I am trying to install it on my dell desktop running XP.  Each time I try it says "the autorun.dll could not be loaded or is corrupt setup cannot continue Error code (0X3E7) or sometimes (0XC1).  Sometimes I get a spwizeng.dll error.  A few times it seems to read the disk all it shows is a readme.txt file and that file says This disc contains a "UDF" file system and requires an operating system that supports the ISO-13346 "UDF" file system specification.  I have the latest bois, firm ware and drivers. I ran windows & update manager and it did not find any problems. I am trying to install the 32 bit version.  I tried that disc on our dell laptop running vista and it seems to work OK.  I did an internet search and it says to reburn the DVD.  This is a store brought DVD.