My first time taking night shots

[pete1606]

This is my first time taking night shots. This is one of the 150 images I took the other night AND i LIKE it but I know it can be improved. Comments please.
It looks way more grainy on the web then it does on my computer and im not sure why.

 

[pete1606]

my picture would post on the message. Im not sure why here is a link http://www.pbase.com/peterhamilton/image/90919144/large

shooting info
cannon digital rebel xt
shutter speed 2
apt4.5