Add Favourites Script

hello there, I have been searching for an asp 'save favourites' script. I wish to use it for a property website where users can save/view/delete their favourite properties, say from a listing.

I'm not entirely sure but I believe that since I do not require a log-in area, this can only be done with cookies.

Can somebody please help me with a basic programme flow of how the script might work, a script found online, or developed already that can be modified (I will include full acknowledgements)

Many thanks for any help in advance.

I can develop one for you. I believe it is something like the yahoo myweb or delicious kind. Correct me if i am wrong