How to remove Caulking?

Our wood replacement windows were wrapped with aluminum capping. When we had this work done in the past to different windows on the same house no nails were visible on the capping. This last job the installer nailed the aluminum capping on all four sides of the window. I I don't recall ever seeing it done like this. Is this a correrct way to install capping? Wouldn't the nail holes allow water to penetrate the capping and possibly lead to rot in the future? Thanks, Dave

Hello everyone, I have been researching window brands for a long time now, but there are so many considerations that I think my best course of action at this point is to spell out my scenario and get some feedback. Thank you in advance: [B]House[/B]: 1950's brick ranch in central NC. [B]Environment[/B]: Rarely snows here. Side of hill, plenty of trees. Sunlight is not an issue. [B]Current windows[/B]: 34x42 between the studs. Single pane, old as house. All of the frames are in good condition, but are not snug with the studs all the way around, AND there is not any insulation around the frames... Suspect a fair amount of cold air leakage... [B]What I want[/B]: Clad wood. Simulated or true divide (none of that just between the glass stuff, or those snap on grids). Low E. Double hung. Good warranty. [B]Important points[/B]: We only plan to live in this house for say, another 5 years. Budget is around $500 per window. First question would be, if the frames are all in good shape (no rot, etc.), couldn't I just insulate the hell out of the spaces between the frame and studs with something like that foam-in-can product, or would it really be worth replacing the frames? I am not afraid of doing this myself, I just want to do one window at a time; and I'll take my time. Second question. Brands... At this point I have read too many complaints about Anderson and Pella Thermastar, so forget them. My feeling now is that since I am not planning on living here the rest of my life, that something like Pella Design series or Proline would probably do just fine. I'd like to keep with the integrity of this little stick-built house, but there are many things I need to do to it so I have to spread the money around...