You need 4 Layer3 Switches (3550 or 3560)
You need 10 Routers (6 Regular Routers, 3 BackBone Routers and 1 Frame Relay Switch)
If you want a terminal server, then you need 11 Routers.
On the routers, you will need multiple WAN and LAN interfaces in order to complete some of the tasks.
If you visit the website from any of the CCIE vendors, they will provide a list of equipment that you need.
If you google for 'CCIE Workbook' a list of vendors should pop-up.
HTH,
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Edison.