Plot attributes from many rows on the same point - Expression vbscript problem

My attributes table contain: Sample#, Age, Error, Lat, Long.

I use a ballon symbol for plotting the Age+Error columns for each point on my map. What would be the expression I need to use for labelling in order to plot on the same spot different Age+Error couples coming out from various rows within my database? The "problem" comes from the fact that information on specific points comes from different rows of the database.

I think I should create a loop somehow that checks for the same Lat AND Long (or Sample#) within the attributes table and plot the desired fields (Age+Error) together.

I tried with "for" and "if/then" but not succeeded (because of poor vbscript knowledge). Any ideas?

Thanks.

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