Web system design

i built a web system with asp/html...
i got it now on plain white background and i realy want to design it like a real software system...i mean gray and white...and may be little other colors too...i need it to look serious and simple(no flash)
i search for examples/patterns/moduls/templates/links...
something that i will be able to look at and get some inspiration...
i used photoshop a lot few years ago...but i realy got no muse

i started to look at some web sites of templates but all i found is lot of web sites designs...no systems designs...

i will be so thankful if somebody will help me with this one