Hi


I have been playing this game for a while now.
But now im stuck.

I am here now :
Botanical Gardens - Glasshouse Generator Room

I am at that place where I have to kill some enemies and then
disable an electric gate. But I have to have the range upgrade to do this
because the gate is too far away and I cannot go close because then
I will get electricuted.

So did I miss the upgrade ? And if so where is it located ?
Or is the only way to start from scartch again ?
I think I have just been upgrading when it said upgrade
but I am not shure.

Is there a way I can maybe by clicking a key can bring up
the upgrades screeen because it only seems to pop up when
I get upgrades ? How to get on with the game?
 
Here is the walkthough i used where he uses the upgrade to get 
to destroy the control box which i can not because i dont have it now.
 
 http://www.youtube.com/watch?v=TIfDyCmjo2M

Best Regards
iceb 

Isn't there a vent you can crawl through to get around to that? I'm having a hard time remembering, but I'm pretty sure there's a way to do it without that upgrade. 
 
(I think you're actually supposed to do it without the upgrade)