Login with multiple id at the same time in orkut , gmail , yahoo

To perform this trick u need firefox mozilla browserIf u don't have mozilla ff u can download it from hereLook on right sidebar for mozilla firefox with google toolbarIt is absolutely free

Step
1: open system properties(by right clicking my computer), choose tab advanced, click to environment variables button. in system variables section, click new. type this information to each textbox.variable name: moz_no_remote(should be all small letter)variable value: 1press ok to close all windows.step

2: open firefox icon's properties(from desktop and quick launch). add extension -p to command line(like "c:\program files\mozilla firefox\firefox.exe" -p). press ok.while starting firefox u have to create two separate profiles of firefox so that u can login to two accounts of any(orkut,yahoo,rediff or anything else).......for three logins create three profiles of firefox.........