Tracy,

You can change pattern a little bit to accommodate spaces around ','

oRE.Pattern = "(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)"

>
>OOPS, never mind, I just figured out that spaces matter. The below works:
>
>

>clear
>lcstring = "RGB(123, 124, 125, 126, 127, 128)"
>? lcstring
>oRE = CREATEOBJECT("VBScript.RegExp")
>oRE.Pattern = "(\d+)\, (\d+)\, (\d+)\, (\d+)\, (\d+)\, (\d+)"
>? oRE.Replace(lcstring, "$4, $5, $6, $1, $2, $3")
>