How anonymous can create a node with location information ?

Hey there,
I would like to know how I can do to make anonymous create unpublished node with location information.
I tried to make it programatically with "drupal_execute" but it seems to be too hard for me to well put in data base the informations of the location cckf fields.
So I'm going to give permissions to anonymous to create the node type which uses location information (without cck fields this time). Is it possible to only display the form and not the complete page www.mysite.com/node/add/nodeType in a popup for exemple ans is it safe for my website?

I'm new to Drupal so what do you think about that and what will you do in my case?

Thanks a lot for your help.