[Oxymoron238]

That's all I did. I downloaded the Verizon one, the last one of the list:

RUU_Spark_W_S_VERIZON_WWE_2.01.605.04_2K_new_parti tion_RELEASE.exe

Once you run the .exe, then the RUU will start. It looks just like the one from Windows Mobile 6, if you're familiar with flashing roms. The RUU's instructions are pretty clear from there.

Also remember, you should NOT have HSPL installed on your phone in order to run this rom. Doing so will brick it, according to the forum post in your link.