I need help installing Java!!

Hello. Sorry if this is in the wrong place.I'm trying to install Java, but windows (SP2) says that it is already installed. What's up with this?I did a full system scan for "java" and "jdk" and deleted every file, but I still have the same error. HELP!!
[276 byte] By [ShadowThundera] at [2007-11-26 15:28:42]
# 1
check win java path
RobertSnooga at 2007-7-8 21:44:52 > top of Java-index,Core,Monitoring & Management...
# 2
check the environment variables............JAVA_HOME or CLASSPATH
Yogesh.Turoc3a at 2007-7-8 21:44:52 > top of Java-index,Core,Monitoring & Management...
# 3
Here is a good tutorial on how to install Java (for JDK 6.0, but I am sure you can abstract to any other version) http://www.javaclass.co.uk/phpBB2/viewtopic.php?t=109Biased,JP
MalteseUnderdoga at 2007-7-8 21:44:52 > top of Java-index,Core,Monitoring & Management...