If the images are for a printed poster, or similar, that is viewed from a distance, you won't need a high resolution, such as 300PPI. Maybe 50PPI or less. What are the dimensions to be (in inches) of your printed poster?
Do you mean 10,0000 pixels wide or 10,000 pixels per inch? As Derek wrote no media needs 10,000 px per inch.
I'm gonna sound old-fashioned there but maybe hire a photographer to make images for you?
To help, we need to know a lot more please, are you looking to find copyright free images to download to support your business trade stand?
I hope this helps neil barstow, colourmanagement net :: adobe forum volunteer:: co-author: 'getting colour right' google me "neil barstow colourmanagement" for lots of free articles on colour management