[shan]

in customer/main/product.tpl

change:

{include file="dialog.tpl" title=$product.producttitle content=$smarty.capture.dialog extra="width=100%"}

to

{include file="dialog.tpl" title=$product.product content=$smarty.capture.dialog extra="width=100%"}

for the recomended products look at where you add categories and there you can see the place to add recomended products to the current category