SharePoint 2007: How to cross-site lookup value?

Question

I'm working in application build in SharePoint 2007, my question is can we do lookup value of Site Column across Site?

Answer 1

Only possible with third party :

http://www.boostsolutions.com/Cross-SiteLookup.html

Answer 2

Create your source list in the top-level site. In the same site create a lookup column looking up valies from that list, now you can use this column throughout the site collection.

Answer 3

If your lookup list is at Site collection and the column is @sub sites of the site collection, then you can try by creating Site Columns as Look up type.