casement window problem

[american spirit]

i've got casement windows. one of them is the 2 crank outs on the side and the one in the middle. the wood is rotted out on the middle window. screws stripped so i can't easily take it out. just looking for a cheap fix, but considering these sashes are about 130 to replace, i might just do a whole new window.

anyway..... any tips on how to get this middle window out?

[BigFish]

How old is the window?? Is it worthwhile to start replacing portions of the casement or just replace the entire window? Thats what you need to ask yourself. I love casement windows....have the Pella casements here and they are awesome!