Possible to register some, but not others?

Hi there,

On my website the majority or products will require the user to register, however I also have some products for which I do not want for the user to register, I just want for them to be able to purchase and pay without registering. I see that there is a setting in the Confirguartion>Checkout which allows you to change this option, but only for all products.

Is there a way of having some products or categories to require registration, but some not?

Many thanks,

Keith