Hi Mark,
You must be a registered buyer on the Ariba Network (AN) to search for public supplier profiles. To search for a specific supplier, within your AN Buyer account, navigate to:
Supplier Enablement Tab>Manage Vendors>Search for Suppliers and then enter whatever detail you know of the supplier (Name, ANID, Address, Country, ect)
If you're generally searching for a supplier (not a specific supplier in mind), you can follow the same path above and rather than searching by address, search by commodity description, territory, or minority information.
Click "Search" and the results of the qualified suppliers will return on the bottom of the screen.
If you click on the supplier's name, you can see details regarding their public profile.