Two tables (Slightly 0T)

Hey, My host has MySql 4.0.x so I cant really use the nested selects of 4.1 :-( please tell me how you solved something like this; I have two tables: users_online (username , dateandtime) users_details (cno, username, has_image, image_name) 1a) I have to select x records from users_online where $username is not more than 3 minutes old, 1b) then I have to check if that username has_image,if yes, get the imagename I thought of having the imagename also in the users_details, but we are allowing our members to change/modify their images at will.... What kind of sql do I use above? I dont want to run a query on every record returned from users_online as that would be really "expensive". Thanks, Ryan -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.13 - Release Date: 4/16/2005