how to use RSA instead of DH?

Hi,     I m using freeradius-server 2.1.7. I ve created an openssl engine for doing all the RSA calculations and it is quite fast. But when i use the try to authenticate something it uses DH algorithm also. so how can i make use of only RSA so that my authentication rate is high. What part of the code should i change? Thanks & Regards, Kachin The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/