DDS to jpg and jpg to dds

On all People I search you Help by my Problem. i have for any Time Lost a DDS Tool, with this DDS Tool could I the DDS Files Convert to jpg and with Poweshop Editing, and the Editing File back to the DDS Format convert, who can help me :help:

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ZAK

Is this it ?

Thankyou Blue for you Help, I have beginn with the Texture for Destroying bar Mog Building for the C4ExP

wfg
ZAK