Using remote desktop connection on ubuntu

Remote desktop: for accessing windows machine's desktop from ubuntu, use following command:

rdesktop 192.168.1.2

where 192.168.1.2 is the ip address of remote machine (windows). 

More options:

rdesktop 192.168.1.2 -f -u xyzabc

will open dektop of 192.168.1.2 in full screen with username "xyzabc", we have to enter password in login window (username has alredy been given)