The positive side: text files don't contain viruses. But they might contain some information you can see using Notepad to open the file.
As you don't tell anything, it's impossible to say more. Things that would be interesting to know:
- how can WE download this file (URL and what to click)?
- what's the full filename?
- what's the file size (in bytes)?
- what's the contents (in broad terms)?
Why is this download a text file? It does me no good because not being an application I'm not able install and use it as it's meant to be. Maybe I'm missing something here.....