If you want to change the owner and organization in System Properties, just do the following:

Open the registry and go to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion

Now just change the value for RegisteredOwner and RegisteredOrganization.

1) Start – Run – Regedit
Navigate to the following Registry key:
HKEY CURRENT USER\Control Panel\Desktop
Double click on the AutoEndTasks entry and replace the 0 with a 1 in the Value data text box

For the next two, if the dword value indicated does not exist, create it:

Double click on the WaitToKillAppTimeout entry in the right pane and change the Value data to 2000

Double click on the HungAppTimeout entry in the right pane and change the Value data to 1000

Reboot

If still having a problem, make the next change:

2) HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control
Right-click on WaitToKillServiceTimeout and change it to 2000

NOTE :- The lowest value Windows will recognize is 1000 (1 second)

Start MS Dos Prompt (Start run CMD)
CHKNTFS/T:4
where 4 is the amount of waity time

CHKNTFS/?
for more info

If your computer takes a long time to become useable after starting up or logging on, or you want a clean boot of Winodws XP try this,

Click Start > Run > Type “msconfig” > On the Startup tab click Disable All and on the Services tab check the Hide All Microsoft Service box and then click Disable All. Click Restart and Windows XP will restart with only the system services and applications running resulting in a vey fast logon / startup.

NOTE:- This tweak will disable all non-system startup sevices and applications so if you have anything you want to run in the background such as anti virus software do not disable that item.

It is possible to disable Windows-XP splash screen, which will slightly speed up the overall boot process.
Be aware that removing the splash screen will also cause you not to see any boot-up messages that might come up (chkdsk, convert … ), but if your system runs without any problems then it should not matter.

1) Edit boot.ini
2) Add ” /noguiboot” right after “/fastdetect”

(or check the /noguiboot switch in msconfig on the boot.ini tab)

Upon restarting, the splash screen will be gone.
It can be re-enabled by removing the new switch.