disable remote desktop password requirement

when i was using XP its like i can enter nothing as a password and get to use my account from the laptop but on windows 7 and vista its like i have to set a password and it doesnt take nothing as a password even if i dont have a password !!!!
i asked some one and he used regedit to disable it but i cant contact him again :S heellllppppp !!!

Local Security Policy > Security Settings > Local Policies > Security Options
At the top of the list is "Accounts: Limit local account use of blank passwords to console logon only"

This setting was enabled by default in Windows XP as well. So in other words you must have disabled this value on Windows XP to be able to use blank passwords from the network.

I DO NOT recommended disabling this setting.

thx man ur Da bezt !!! XD

that thing did the job instead of me changing the key but still i prefer to change the key by myself if u know how plz tell me how to do it(just for my knowledge)

the problem came since i started to install programs on 10 laptops so i have to go on each one and do the work or ...use remote desktop !!
so i cant remmember the passwords for 10 pcs and i dont wanna carry a list of passwords... its a 3 hour-temp situation so its not that risky as the pcs are all brand new !!
thx again bud

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa\LimitBlankPasswordUse

told u ... ur Da bezt XD