Just installed. Everything went fine but I'd like to add the following notes:

For step 3 in the installation instructions.. might one be able to change the extension of the two sample files so as to avoid override problems? These files seem a little silly and redundant anyway considering the lines needed are present in the installation instructions.

For step 5 the full path of tpl_product_info_display.php would be useful.
/includes/templates/YOUR_TEMPLATE/templates/

It would be nice if you included a step 7. Go to admin->tools->module manager
and install the module. The cross sell mod causes db errors if you omit this step.

Also is there a reason why configuration says Cross Sell while catalog says Advanced Cross Sell. The different names could be misleading.

Just my nitpicks...
Anthony