Enabling Self-Service Site Creation
By default, only SharePoint Administrators with access to the Central Administration web site can create new site collections. To allow others to create new site collections, enable self-service site creation. To do that:
Navigate to the Central Administration site, click Application Management, and then click "Self-service site management" under the Application Security heading.
Complete the page, as shown in Figure 13-13, and click OK.

Figure 13-13. Allowing others to create new site collections
Enabling self-service site creation adds an announcement with a link to the scsignup.aspx page in WSS, but not in MOSS. To help users find the page in MOSS:
Navigate to the top-level site in MOSS.
Click Site Actions → Site Settings → Modify All Site Settings, and then click "Site directory settings" under the Site Collection Administration heading.
Complete the page, as shown in Figure 13-14, and click OK.

Figure 13-14. Enabling site collections in the MOSS site directory
Enabling site collections in the MOSS site directory changes the Create Site link on the MOSS Sites tab from "Creating a new subsite" to "Figure 3-3." Subsites inherit their permissions from the parent site and so are a little easier to use. Site collections have unique permissions, can be stored ...