Need help, can someone help me?

I am seeking some advice on how to solve my website optimization blues. My company has an award winning site, but was not optimized by the creators. Over the past 8 months I have been optimizing my company's website and have greatly raised the rank placement. However, both Yahoo and MSN act strangely to my keywords. If I input a keyword on Yahoo or MSN I get different results at different times. Sometimes the page I want comes up and at other times it isn't there at all. To help narrow down the search I even included our company name, yet the pages still might not show up at all. This is very disturbing because it is like a roll of the dice, and our potential customer aren't likely to keep trying the same keyword in hopes of getting different results. Why is this happening? It has been 3 months since I made any recent changes so my pages should be indexed properly. Does anybody have any answers?

Also I have another problem with our website. Our URL is www.sierradisplay.com, yet Yahoo and MSN somtimes list us as "www.sierra-display.com" The hyphenated domain name is from the company website years ago and we don't use it anymore and I can't seem to get rid of it. When I put in a keyword search I can get either the hyphen version or the normal URL. Maybe my two problems are related? I submit our website every time without the hyphen, but it still sticks and how the heck did MSN index it with the hyphen when we stop using that domain years ago? I'm losing my mind! Can anybody help me please? Thanks! :)


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