problem compiling servlet

Hi all,
I have been trying to learn servlets for the past week. I wrote a sample example and am trying to compile it but have been getting problems.

When I write javac -classpath /personal practice/tomcat/common/lib/servlet-api.jar -d classes src/Ch1Servlet.java on the command line I get the message that 'javac' is not recognised as an internal or external command,operable program or batch file.

My source file Ch1Servlet.java is under project1/src directory

I want my class file to be placed under project1/classes directory

I have also mentioned the path of the servlet-api.jar in the command.

My classpath has been set to C:/program files/java/jdk1.6.0_12/bin

I just can't figure out why javac is not being recognised as a command.

Can anyone please help me.

why u r not trying with any ide.???