Hey Kiran,
Log into your myvmware account and then go to www.vmware.com
Click on Support and Downloads
Once you click on the same, you get to a page that has a hyperlink for "Download Free Evaluation"
Click on the link
It will take you to your myvmware page and you have an option to register
Register - you will get the page below
Fill in the details and search for "management server" at the next page
If this is not working, contact VMware sales directly as your account might be having issues
Regards
a