There are actully no prerequisites to the Cisco CCIE Certification. Cisco do recommend you have at least 3 years hands on experience with Cisco hardware and have an in depth understanding of routing protocols, switches, routers and security devices.
To get CCIE certification, you must first pass the CCIE written exam. After you pass the written exam, you qualify to schedule and take the corresponding, one-day lab exam on-site at one of the ten Cisco CCIE lab locations. The hands-on lab exam tests Cisco equipment command knowledge and network troubleshooting skills.
I would however suggest that you do not attemp the CCIE without first obtaining some other Cisco Certifications.
CCNA, CCNP, CCSP etc
These qualifications will give you a good groundig in networking theory and concepts and make your journey to the CCIE Lab exam a lot easier.
As first stated in this post there are no CCIE Prerequisites, but this does not mean to say you should just jump in at the deep end, prepare well and remember this is a marathon not a sprint!