yellow hue ,....help please

I have a photo booth that my husband and I run at festivals..we just

started it..I am using an olympas-ulta zoom digital and I want to

make a better qaulity of picture that the run of the mill...carnival

type...I have a 4'flouresent tube light, and my tent is white..when I

did practice photo's I didn't have anything on the walls other than

my blue back drop...and no flash...and the picts came out

beautiful..day and night....on the job last night my picts we're

coming out with a yellow hue..and nothing I did could change it..I

had tye die's and some smaller yellow banners on the side walls...I

thought maybe that was it so I took most down and left the tye die

up ..but picts we're still the same....I really need the decorative

stuff on the walls..my ? is this...is there any inexpensive way to

compinsate for this some sortra filter..or some setting that I'm

missing??...I'm a newbie at this!!!

thank you to any one who will help me on this

toni

Check the instructions to discover how to change the white balane on your camrea or perhaps someone has changed the white balane to reflect the blue walls. At any rate use a white piece of paper to set the white balance for your camera in the lighting that you normally use and you should be OK.