I just create an AMI instance of EC2 and than upload it S3 using following command:
ec2-bundle-vol -d /mnt -k /root/PrivateKey.pem --cert /root/Certificate.pem -u 012345678901
ec2-upload-bundle -b yourbucketname00404042009 -m /mnt/image.manifest.xml -a your_s3_access_key -s your_s3_secret_access_key
It uploaded to s3. How to create iso file of the uploaded files?