Wake Up with a timer

Hello,
i am using my acer aspire one to control a remote instrument.
I would like to wake up my little pc, connect to internet and send some file, every day at the same time.
I already can do that, but i need to leave the notebook always on.....
it is possible to leave the notebook in stand-by mode (or better completely off) and schedule a periodic wake-up?
some other notebook has bios wake-up options, but i can't find that in my little aspire one.
the OS is windows xp home
someone could help me?

thank you,
BEZ.

 

http://blogs.techrepublic.com.com/window-on-windows/?p=828

Give that link a try, and let me know if it works.

 

thank you for your kind reply.
i already tried that way,
i can schedule a task but it doesn't work because (i don't know wy)
it is not possible to store userid and password for the task execution

i attach a screenshot about my try

 

Did you use the wizard? The instructions page seems to think there's a place to enter login stuff.

 

Yes, i did,
but at the end of the procedure i receive a windows error: 0x80041315

 

I had this error also -0x80041315
solution is kind of simpel ,
put a password for your admin account in xp - rersart- done .
whats buggin me is that u have to enter the pwd every time you log on..
(of course not when he wake ups by timer )
but it WORKS.