Registry.SetValue problem in 2003 server

[ninhovid]

hi...

i just published my app in a windows server 2003..
i save my app config in windows registry... it worked fine in my laptop... but in the server it doesnt let me createa key, i mean:
HKLM-SOFTWARE-new key

i cant create it... i need to create it first manually... and then i can add its values inside of "new key"...
but i dont want that.. how could i get this done?

thanks in advance....

p.s. i use OpenSubKey to have it as write and not read-only