The "launch titanitum.bat" file should be in your install directory after patching. If you're using a shortcut to that batch file make sure the path is correct. Here's an example of mine:
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Also make sure to set the compatibility mode on the eqgame.exe file itself (which should be in the same directory as that "launch titanium.bat" file) to XP sp2 (or sp3):
http://wiki.project1999.com/Tech_Sup...ing_or_Camping
-Mcoy