Yeah, I tried downloading it and it says it's a 7Z file or whatever and I can't figure out how to extract it to my mod's folder. Anyone help?
Use WinRAR.
How do I get it? And is it free because I have no money at all.
NO!! Use 7zip. Best extracting tool you'll ever need. And yes it's free and open sourced.
Cheers
Ok, just one more thing, where can I get 7Zip, oh, I probably should've mentioned this earlier, but I'm also using Vista.
Well, actually I got a download of Winrar from this emulator I downloaded on my laptop, so how could I do it with that?
If you don't know how to use WinRAR or similar softwares you should check the official page:
http://www.win-rar.com/index.php?id=24&kb=1&kb_article_id=93
If you don't know how to install mods, you should check this article:
http://tesnexus.com/articles/article.php?id=211
Read and try to pay attention, have fun ;D
PD: Ho! and btw, about the name of the Topic, you didn't have a Download Problem, you don't know hot to install the mod, wich is different, just saying! Because it sounds more like if you had a problem downloading the file from the website, when there's no problem with the ESP Converter or the server. Have a good one! 
Yeah... i use vista too.
If something doesn't work on vista, just set it to administrater. 