Hmm not sure we understand each other.

Device with VGA input (female)
Device with DVI output (female)

Then you need a DVI (male) to VGA (female) converter on the 2nd device, and use a normal VGA cable. You normally carry your VGA cable with you (or so I'd assume) having your converter with you in case you stumble upon a DVI only output.

If the second device has for some reason DVI male output you'd need a slightly different converter: DVI (female) to VGA (female)