How do I change date modified of a folder (Yahoo Small Business Hosting)

Yahoo server does not support SITE UTIME. I am trying to change the date modified of a folder using SmartFTP but the message I get is 500 'SITE UTIME 2010XXXXX ': command not understood.
The folders show up as "date created" in their timestamp.

Tried using Filezilla's "preserve Timestamp" - Doesn't work too. Please help as I need a solution to this ASAP!

Additional comments:
1. Yahoo does not allow shell access.
2. I am not sure but Yahoo servers do not seem to support MDTM, MFMT, or SITE UTIME!
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rogerardConnect With a Mentor Commented:
So sorry.  I completely forgot.  Here you go.
Try using php to accomplish the task.  Here is a link that describes the necessary commands to accomplish the task.
kaykay2009Author Commented:
Thank you for your reply. Could you kindly send the link? Regards, Kay
kaykay2009Author Commented:
Thank you Roger. We solved the issue, thanks for your assistance. With my warmest regards, Kay
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