I'd like to buy a computer monitor. Is there anything I need to know?Are all computer monitors suitable/compatible with all computers?Is there a specific type of monitor I should be looking for or will all monitors work with my computer?Thank youhttp://www1.ap.dell.com/content/products...n&s=dhsFor example, on this "Dell" website.. there are a few monitors for sale.How would I choose between these 3 monitors? Which one of these would be the best?Thank you very much.