Chrome has a standalone installer, here.

Here are the steps I performed to create multiple profiles using Google Chrome, allowing me to have quick access to two Google Reader setups. (I found a description of how this is done here)

Step 1: Clear browsing history and data (if you want to)

Step 2: Copy folder "C:Users[username]AppDataLocalGoogleChromeUser DataDefault" to a new folder in the same location (I called mine Podcasts)

Step 3: Set new profile to factory settings (if you want to) by running c:Users[username]AppDataLocalGoogleChromeApplicationchrome.exe –user-data-dir="C:Users[username]AppDataLocalGoogleChromeUser DataPodcasts" -first-run

Step 4: Create an app shortcut for Google Reader using Chrome and edit it to add the –user-data-dir= directory from above.

Boom! Done!

Now I have a shortcut (that I put in the Start Menu) I can use to get right at my podcasts…no browser navigation or passwords necessary. Once that profile has the right cookies it just works!