Where did my light styles go! Photoshop 7.0

[rmaucere]

I have been perplexed by the odd scenario I have been presented with not but a few hours ago. I am working on a series of immages personal shields to be more specific. Each of these shields are the exact same shape, and I am using lighting effects to give them a more metalic effect and privide a realistic rendering of the relatively flat images.

So here's my problem, i decided to make a new "light style" to save myself time in applying the lighting effects for each image. I created a test image to allign my spot lights and etc. and when I was finally satisfied with what i had achieved, i went and clicked on the save button to save it as a new light style. This is where the problem happened. Instead of saving the light style, it deleted all of the default light styles as well as the style i had just created. Now there are no lighting styles to chose from and where there would normaly be a box to select a light style, it is just an empty space. What happened and can I get them back? PLEASE HELP!