If you’re house is even half as old as mine is, its likely that you have similar sash and weight style windows. You know, the ones that are cold, drafty and often times have snapped ropes? Luckily, they are pretty simple to work on for the average do-it-yourselfer. Eventually I am going to replace the weights with spring balances and insulate but for now they just needed to be done. Another person helps but this definitely could be done on your own. These windows usually arent too heavy. There is plenty of information and how-to’s out there on YouTube and and This Old House’s web site.
In my case, I needed to duplicate some weight pocket doors because I was missing a set. This unfortunately is a little more advanced but anyone with some table saw skills can make these. All you need is a miter and some scrap wood. More pictures and descriptions can be found on my flikr page.