Hello,
I used to be a manager of a Sign Shop and i used to design and produce logos like this all of the time for customers via CAD so here's my penny's worth...
The logo background image is fine but i think that you should rethink the font and the dropshadow.
The word 'Sunshine' is ok but the words ' Window Cleaning' are too illegible considering the importance of them.
If i were you i would pick a modern, simple font for these words, something nice and easy like Arial or frutiger.
Also, having a black dropshadow on a dark letter isn't really the best way to go, it also takes away from the impact of the lettering - i would advise to either drop the shadow or lighten the blue lettering - lightening it will actually make it stand out more.
Also, i would keep the word 'Services' - it actually states that it is a service that you are offering and in the brief glaces that this logo will get, this is an important factor i think.
Definately drop it down though, and change the font.
I haven't got time to go over any more at the mo, i've gotta run and take my lad to nursery.
If you like, drop me a mail and i'll see if i can get photoshop cs2 out and i will have a bash around with it for you.
Carl
cb004h1564@blueyonder.co.uk