You can use MoveFile to rename so you don't have to delete anything.

>>You can use Win API to preserve destination file name case. See Re: Rename a file long file name from lower to upper case Message #801674
>
>Well, based on this, this is how I succeeded to achieve that:
>
>

>DECLARE INTEGER CopyFile IN KERNEL32.DLL ;
>   STRING SourceFileName, ;
>   STRING DestFileName, ;
>   INTEGER bFailIfExists
>
>ADIR(laFile,'*.*','',1)
>FOR lnCompteur=1 TO ALEN(laFile,1)
>   lcFile=laFile[lnCompteur,1]
>   lcFileNew=UPPER(SUBSTR(lcFile,1,1))+SUBSTR(lcFile,2)
>   RENAME laFile[lnCompteur,1] TO (lcFileNew+'a')
>   CopyFile(laFile[lnCompteur,1]+'a',lcFileNew,0)
>NEXT
>

>
>Then, I removed the temporary files which have been renamed in order to keep the same name.
>
>Thanks