I personally had tested it to be working on Pay87 latest v2.1 bravesoul rom and is working..
u can copy these files you downloaded and save it to your HTC desire sd card.
once saved, you can install file manager like eg: astro, andexplorer, estrong from the android market. open the file manager look thru your sdcard for these files, and click on install? =)
DL LINK: Dandelion
FYI: I just realized this Dandelion wallpaper the amount of seeds attached to the flower infers the amount of % your battery has left.. try to see the amount of seeds it have on full charge, it looks really round full of seeds.. when it is low on bat you perhaps just see 1 or 2 seeds attached on the flower. lols..
DL LINK: Blue Sea
DL Link: Aurora
DL Link: Ocean Wave