If you only need it for one or two uses, look into getting one of those vacuum bags used to store quilts under the bed. THey are usually available at Walmart etc.
The will hold quite a vacuum and are going to be much cheaper than building a dedicated table.
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This should answer any questions you may have about constructing a vacuum frame press:
http://www.joewoodworker.com/veneering/vacuum-frame-press.htm
Perfect answer and excellent article in the link.
If you only need it for one or two uses, look into getting one of those vacuum bags used to store quilts under the bed. THey are usually available at Walmart etc. The will hold quite a vacuum and are going to be much cheaper than building a dedicated table.