certi.exam on XI

Hi Folks

I missed the teched'05 in banglore, now i want to take the certi.exam on XI without training from SAP.iam having 3+ exp in abap, i dont have hands on exp on Xi.

one of colleague said either i should trained

from SAP or should have 2 years exp 0n XI is it??

am i eligible to take the exam by just paying exam fee?

please help me.

thanks in advance

priya