DNS round robin for WWW

[System Operator]

hello guys,

Does anyone advise me the proper way to set-up a round-robin for WWW
servers? anyway here is my db file.

$TTL 1D

e-preschool.com. IN	SOA	ns1.fapenet.org. root.ns1.fapenet.org.
			200008161	; Serial
			10800		; Refresh after 3 hours
			3600		; Retry after 1 hour
			3600000		; Expire after 1000 hours
			86400 )		; Minimum TTL of 1 Day

e-preschool.com. IN	NS	ns1.fapenet.org.
e-preschool.com. IN	NS	virgil.fapenet.org.
e-preschool.com. IN	NS	galileo.fapenet.org.

localhost.e-preschool.com IN	A	127.0.0.1

e-preschool.com. IN	MX	5	www.e-preschool.com.
e-preschool.com. IN	MX	10	galileo.fapenet.org.

e-preschool.com. 	IN	A	202.134.224.4
www.e-preschool.com.	IN	A	202.134.224.4
			IN	A	202.134.224.5