I really need help.  I downloaded a background from hubblesite.org and used
it for a while but it never worked well.  I am trying to change background
now and can't.  When I try to move the list or click change nothing happens.  
It is like that part if frozen.  Everything else on ...

3 times in the past couple of weeks, I've gotten a BSOD on my XP Pro SP3 box.
Event viewer records:
The computer has rebooted from a bugcheck.  The bugcheck was: 0x1000000a (0x00000014,
0x00000002, 0x00000000, 0x804f05de). A dump was saved in: