just to look at the attachment without running it through
psp, it looks to have 2 major problems, noise and lighting.
try Neat Image for the noise or some of your noise filters in
PS. Neat Image has a free version which shld work for you (i have it installed also).
for the lighting, a fast fix might be Fast Fix, also a free plugin. or, try 'curves' or 'levels' or 'contrast/brightness' in
PS. any of those can lighten things up a bit.
if you still run into trouble, post your work so far and someone will no doubt take a look.
Craig