Help please.

[Mr.SuperHero]

A friend gave me a Canon K2 the other day.
Only problem is the focusing ring on the lens isn't on...
Any ideas how to put it back on?
Here are pictures of what I got to help...

 

[Jaszek]

try screwing it back on

 

[Mr.SuperHero]

I have... No luck.

 

[FSquares]

Why not? Doesnt the screwing work? .. if its lost the threading then you will need a replacement.

OR you could use the camera used to take the photo of the camera here.

 

[Mr.SuperHero]

It might just be the lens... It just doesn't seem to be clicking or whatever when I screw it. And when It does remotely get on there its all messy...

And I'd just like this to play around with film.
My friend has an XSI so I'll probably end up borrowing his 18-55 for this thing if I can't get it to work.