my brother has his own account(limited account) in our computer that is a windows xp. he keeps installing games that would take a lot of hard drive memory, how can i prevent him from installing games in my pc? are there any options for that certain instance?

two issues here; a) space for storage and b) permissions to complete the install.

a) have him get a 1-2gig flash drive and ONLY install there.
(you may need to mount it for him)

b) permissions necessary are those on the media (HD or flash) and the
registry. That portion for the Current User will allow the LUA user to
complete the task, as long as there are no startup programs.

i see

if you don't mind, can you give me a step-by-step instructions on how to do the issue b that you said? thanks!

I thought under the ‘limited’ account users could not install software, odd.

Actually you can *IF* you install to a private location, eg
\Docs & Settings\$yourlogin\ or better still
\Docs & Settings\$yourlogin\Start Menu\Programs\

These locations have the correct permissions for Y O U only so the files
can be written. As stated previously, the issue is what kind of registry entries
need to be created.

Just mount the flash drive and be sure it has a drive letter assigned.
I suggest something like J:\ or K:\. You may need to use your Disk Mgr
to force the drive letter of your choice.
cp->admin tools->computer mgmt->Storage->Disk Mgr
right-click on the Flash Drive->Change Drive letter

Once the Flash is mounted, have your LUA user install to the path:
$DLA:\whatever