I have the following script running

start /d"C:\Program Files (x86)\Bitcoin" bitcoin.exe -server"
start /d"C:\guiminer20110614\guiminer" poclbm.exe --user=FT --pass=wombat --device=0 --platform=0 -w 256 -f1
start /d"C:\guiminer20110614\guiminer" poclbm.exe --user=FT --pass=wombat --device=1 --platform=0 -w 256 -f1

With the following config file bitcoin.conf
rpcuser=FT
rpcpassword=wombat

I have been running this continuously for about 4 days not much seems to happen the Khash/s rate varies the connections go up and down. see below image.

I am a bit concerned it is actually doing anything
How can i tell if it is actually doing anything or progressing?
Approximately how long I need to wait to see it generate a block?

Hardware is a single ATI HD 6990 card.



Many thanks I am very new to this and I cant find the exact info on the web anywhere.