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If you want it to look more professional then hire a professional.

There are too many elements besides positioning that don't make the page look "professional", such as excessive blinking, busy background, color palette, to name a few. I also don't get the mix of flash and javascript - pick just one and stick with it, there's no need for these two on the site (everything that uses javascript could be done in flash).

Since there are things that are better understood viewed than read, take a look at the sites at CSS Zen Garden: www.csszengarden.com/

On a side note, there's a limit to signature images.