can anybody tell me how to change product names and prices on geller et 6600,i cant work this out,please help me.also i think some keys may have been moved as i cannot find design or input keys,nothing ive tried works.

The buttons you are talking about are on your programming sheet. You must have the sheet to input the new names. have a look under your other keysheet and see if it is there. If not, just look at the example one in the manual and draw one up to fit your keyboard

thanks matey ur a star,just tried that,works a treat,any idea how to change welcome message that stays on screen and also having trouble changing cashiers names on screen,thought id done it but old names came back later,

Been trying to find a manual. These are a rare machine now so don't lose yours
I think this model can have clerks or cashiers, so check if there is programming for clerk name and try changing that. Make sure you are pressing input after the new name before turning the key back to REG.

I haven't seen the welcome message you described. the 7626 has a scrolling message which runs on the display when not not in use. Does it work like that? It maybe called commercial message or advertising message