help needed on xp themes

i have 2 questions...

1. I am not able to save

the .theme file for

screen saver, every time i add

my scr name it always load

none. But it works with

windows default scr i.e.

Logon.scr .

I have bubbles.scr

please tell me the lines of

settings for a scr in theme file

2. In some themes we have

several shellstyles such as

aero32 and aero48 etc.

When we apply that theme

it always load aero32 as

default but how to set aero48

as default. What kind changes

have to made by using

resource hacker in the

.msstyle file