executing variables in ksh script?

In a ksh script on an AIX box running a jillion oracle database processes, I'm setting a variable to one of two possible arguments, depending on cmd line arguments.

FINDIT="ps -ef | grep oracle | grep DBexport | grep rshrc"
-or-
FINDIT="ps -ef | grep oracle | grep prod | grep runback"

I want to have a way to execute the command list defined by the variable $FINDIT later in the script, putting the result in another variable. Any ideas how?

Things I have tried:
1. The straightforward RESULT=`$FINDIT`
(I get a usage on ps)

2. Putting the list in braces gives me bad substitution
FINDIT=${list}

3. exec is not on the system.

With either of the possible values of $FINDIT, if I execute them on the command line, there is no problem. What am I doing wrong?

Thanks,
-zedmelon

I thought I'd found the answer in a post by M.Hirsch on this page here:
http://forums.devshed.com/t74294/s.html

RESULT=`echo -e "$FINDIT"`
only puts this into the variable $RESULT:
"-e $FINDIT"

:(

slash me grows despondent...

RESULT=`eval $FINDIT`

M.Hirsch...

That worked on the command line. I'm betting it'll work in the script as well. Of course, this is monitoring a process that runs 1/week, so I'll confirm next Tuesday...
:(

Thanks again; I appreciate the help.

-zedmelon