Heh ... I wondered as I wrote whether I would end up with the ol' egg facial treatment. (If you hadn't provided the link, I would have assumed that collision was something you whipped up all by yourself :-)
Of course that doesn't demonstrate that a string (of a specific length) that hashes to a given digest can be found readily - which would be the OP's main concern. But, with the progress that is being made in the breaking of MD5, I think I might refrain from making any more rash assertions.
, for the heads up.