Custom Column Type

Topics: General/Misc.
Dec 31, 2007 at 3:20 PM
I am fairly new to SharePoint. I am using WSS 3.0 and working with columns in my documents lists. I want to create a "unique" column that users can manually input their own document title. However, the title must not be duplicated. I can't seem to find a column that fits the bill. Any suggestions? Any help would be great.