JAVA SE DEVELOPMENT KIT NOT FOUND!!!!

1.   On way to experiment with android application with the stand SDK toolkit....i got messed up with the installation procedure so much that i thought of just leaving it..... in spite of all java installed  i got this screen.....

2.   I read all trouble shoots of on JAVA site.....some diverted me to registry editors and what not.......till i got the correct answer...simply click BACK and then NEXT again......khatam...thats the end of it.....