I have to agree with LooseChippings. I would go ahead and do it.
When I got a new computer with the XP Home version (probably one of the first ones out), everything I tried to download or install would tell me it wasn't safe. I went back to the store where I bought it, and they assured me that I could download the drivers that I needed by going to the manufacturers websites, even though the computer would always give me a message saying that it wasn't digitally signed by microsoft. I cringed everytime I clicked on download anyway, but it worked and didn't hurt a thing.
I won't tell you to "just do it".... But I would......