Blending Options Dialogue Box Does Not Appear

When I click on a Blending Options layer the layer dialogue box does not appear and the window locks up. The only thing I can do is hit enter to get out of the lockup. I have a feeling the box is hiding somewhere... To say the least, I'm quite frustrated... Any answers or suggestions???

See the FAQ about dialogs off screen.

And if you're on Win98/SE/ME - upgrade to NT/2K/XP (because 98 is just slow)