http://technet.microsoft.com/en-us/library/cc960646.aspx

Here is the relevant part from the post:

LmCompatibilityLevel

HKLM\SYSTEM\CurrentControlSet\Control\Lsa

Data type

Range

Default value

REG_DWORD

0–5

0

Description

Specifies the mode of authentication and session security to be used for network logons.

Value

Meaning

0

Clients use LM and NTLM authentication, but they never use NTLMv2 session security. Domain controllers accept LM, NTLM, and NTLMv2 authentication.

1

Clients use LM and NTLM authentication, and they use NTLMv2 session security if the server supports it. Domain controllers accept LM, NTLM, and NTLMv2 authentication.

2

Clients use only NTLM authentication, and they use NTLMv2 session security if the server supports it. Domain controller accepts LM, NTLM, and NTLMv2 authentication.

3

Clients use only NTLMv2 authentication, and they use NTLMv2 session security if the server supports it. Domain controllers accept LM, NTLM, and NTLMv2 authentication.

4

Clients use only NTLMv2 authentication, and they use NTLMv2 session security if the server supports it. Domain controller refuses LM authentication responses, but it accepts NTLM and NTLMv2.

5

Clients use only NTLMv2 authentication, and they use NTLMv2 session security if the server supports it. Domain controller refuses LM and NTLM authentication responses, but it accepts NTLMv2.

THE GOOD OL’ QUICK LAUNCH SOLUTION

1.Right click on the taskbar
2.Select : Toolbars—>”New Toolbar”
3.Enter this line in the folder line :

%SystemDrive%\Users\%username%\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch

4.Make sure the right folder appeared on the list, then press “Select Folder”
5.Unlock the taskbar

Voila! Seems like you got the good ol’ quick launch bar

via http://windows7forums.com/windows-7-discussion/1163-taskbar-customization.html