Finding the highest number in a directory... STILL UNRESOLVED

[VisionIT]

We are currently building a package which places each estimate number into a file like this...

c:\estimates\1.txt
c:\estimates\2.txt
c:\estimates\3.txt
etc.

I have programmed a listview to read-in all the files in the estimates directory... but you have to give it a number from at to... IE.

For Intx = 0 to 25000

The question being... how can i search the directory for the highest number of file to that number can replace the 25000 in the example. The trouble is, when the user enters a number 25001... it won't find it.

I can't set the number to 10000000 before anyone asks....as it would take weeks to open the program.

Any help would be much appeciated.

Regards,

Paul.