Can't Get Grisaia no Kajitsu To Install

[Zenophilious]

I'm 100% sure that my System Locale is Japanese.  Anyway, when I try to run the installer, I get this exact problem, but I'm not quite sure how the OP fixed it.

 

This is the screen I'm stuck on: 

I tried selecting folders at random, but I get this message:

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インストール先エラー
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インストール先ドライブの残り容量が足りません。インストール先を再設定してください
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OK   
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I also tried CRTL + clicking on the window itself, and I got this:

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インストール先エラー
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インストール先ドライブの残り容量が足りません。インストール先を再設定してください
---------------------------
OK   
---------------------------

 

I was able to translate them, but I have no idea what to do to install it.  Would someone mind explaining what to do to me?  I'm a Mac person, so I'm not the best at fixing things with Windows.  I apologize for not being able to fix my problem with the thread I linked to, but I'm not quite sure how to do their solution.

[jeftai]

i never received any type of trouble from installing grisaia but i geus ill redownload it and try to replicate the problem.

but any for starters try make a new folder called stuff or something in your C: and place everything in there.

also make sure every file you downloaded is named right.

[Luch]

It's saying you don't have enough free space on your hard drive. The image shows  you have 3GB free and grisaia requires 6+. 

[Zenophilious]

Luch, you were right  :/  I'm running Windows 7 on Parallels 9, so the amount of space on my hard drive is limited, and changing it is a little complicated.  I was able to delete some Steam games, though, so I solved my own problem.  It seems to be installing properly now  Thanks for the replies!