How to change color mode of the working space?

Hi, My printshop wants all my color work in RGB 1998. When I change my color settings to RGB 1998, every time I open PS with a file I have to go thru a dialogue box that says my color settings don't match the working space and gives options ("color manage", "don't color manage", etc). Is there any way to leave my settings at RGB 1998 and have the working space reflect that---or at least have the program always ignore the color settings and don't ask me each time? Thanks for any help on this!
TB

In the Colour Settings dialogue, you have the option to: * Ask every time
* Convert to working space - or
* Use embedded profile

Thanks a million. Don't know why I couldn't figure it out now that you told me. I appreciate it! TB

....and the answer for you if to convert to your working space.

Otherwise you will still be sending RGB numbers with the wrong profile embedded.

Thanks John, got it all fixed now. Appreciate it!