Yes, there is a way. Go buy Photoshop CD, insert in your netbook aaaand... the magic will happen! Seriously, I tell you.
Why there is a problem? I thought you can just easily install it, or did you mean your netbook have no DVD tray? what netbook do you have?
Get pohotshop portable.... I used photoshop on a netbook for 2 years and made some of the best graphics I ever have.
Actually I was tried to run it on my net book. My net book configuration PROCESOR:1.83GHZ ATOM,RAM:1GB,PLATFORM :WIN-7. But I am failed to run photoshop cs3,I tried other lower level version but my pc told he is....... This is my experience I have earned today. Examine your net book configuration ,try,just wait for the result.