I have written a custom stored procedure which calls a system stored procedure such as sp_helpindex. Is there anyway to manipulate the results that are displayed from the system stored procedure. For example, I would like to substring out the first 30 characters of the first column.

To give you an idea of my stored procedure...you pass in tablename as the parameter and the following is executed from within my stored procedure:
@str1 = 'exec sp_helpindex [' + @tablename + ']'
exec (@str1)

My stored procedure does many other things, but I would like to clean up the display of results generated from the sp_helpindex.

Any suggestions would be appreciated.