DonsPackWIP.zip is a release file of the Minecraft resource pack Don's Pack [16x][1.2.5][WIP], made for Minecraft 1.2.5. It was published on June 8, 2012 and is 1.4 MB in size. For the full description, screenshots and every other version, visit the Don's Pack [16x][1.2.5][WIP] resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.