Hi Shamal - deatils posted here:
http://communities.vmware.com/message/1752412#1752412
It is a relatively simple tool to use.
Once you have installed it on a server, you will need to access the console.
From the console, find the 'discover' option and run discoveries of both your Linux host and the ESX that you plan to migrate.
You will need to use root credentials for both of these hosts (and also have SSH enabled for the root account to make it work)
Once you have 'discovered' the source (linux host) and destination (ESX host), find the option to 'Move workload'
This should start a wizard.
The wizard is pretty good - the only things to watch out for are that you will need to provide source and destination 'take' addresses. These are temp IPs on the subnets of the hosts that will be allocated to your Linux host during the migration process.
The migration is done by rebooting the server to an alternative, reduced OS that will manage the copy / move of the VM.
No client is required on the Linux host - just root SSH access and some downtime.
Good luck