SQL 2008: Unattended install.

E:\Installers\SQL>Setup.exe /qs /ACTION=Install /FEATURES=SQL,Tools /INSTANCENAME=MSSQLSERVER /SQLSVCACCOUNT="NT AUTHORITY\SYSTEM"
/SQLSYSADMINACCOUNTS=".\Administrator" /AGTSVCACCOUNT="NT AUTHORITY\Network Service" /IACCEPTSQLSERVERLICENSETERMS

From this blog post

Also worth looking at is the official docs.

Also this blog on using a .INI file

Two ways to find system up-time:

Systeminfo | find "Time"
net statistics server | find "sinc"

Anti-virus on Citrix Servers

Based on Citrix Consulting experience, the antivirus software should be configured as follows:
• Scan on write events only
• Scan local drives only
• Exclude the pagefile from being scanned
• Exclude the Print Spooler directory to improve print performance
• Exclude the \Program Files\Citrix folder from being scanned (the heavily accessed local host cache and Resource Manager local database are contained inside this folder)

More...

Also worth reading is this blog post on the same topic.

Microsoft Genuine Advantage – Diagnostic Site
Handy site to see if Internet Explorer (a plugin for Firefox available too) is configured correctly to run the validation process.

More...

0x80080008 error with Windows Update:

net stop wuauserv
regsvr32 wuapi.dll
regsvr32 wuaueng.dll
regsvr32 wuaueng1.dll
regsvr32 wucltui.dll
regsvr32 wups.dll
regsvr32 wups2.dll
regsvr32 wuweb.dll
regsvr32 MSXML3.dll
net start wuauserv


More...

Enable RDP remotely
Connect to a computer remotely and edit the registry to enable Remote Desktop More...

Blocking USB Keyloggers

Sanctuary from Lumension is one product that can do this. More...

Work-around to connect to a client

[1] Get a disposable email address
http://www.guerrillamail.com/

[2] Get a trial of logmeinrescue
https://secure.logmeinrescue.com/HelpDesk/CreateTrial.aspx

[3] Give client the PIN & URL
https://secure.logmeinrescue.com/Customer/Code.aspx
Email PIN to client and session will connect for you,