Hi Diamond G', I noticed improvement from 03 to 07 but i am not sure if it is a subjective or objective observation... DDE will use much more of your CPU than RTD... that is why we switched last year... that is more of an improvement than 03 to 07 we think... I only pull in 3 fields on 1600 stocks... but we do a lot of VB Calculations in Excel's backend software module section... Change, Volume, Last Price... etc... HTHelps... cj...