how to remove "/virtuemart/default-layout/" from the URL

[binarix]

I am using Joomla 2.5 and Virtuemart 2.0.18a. I am using a commercial template as well. But the product urls contain "/virtuemart/default-layout/"

Can you please tell me how to remove this part from the url "/virtuemart/default-layout/"

Thanks

[binarix]

can anyone help me on this.. :S