Adding FBA to existing SharePoint installation

SharePoint FBA Pack
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1
Hi! I would like to add FBA to an existing SharePoint Foundation 2010 installation. We only have one SharePoint Application, and it only has one zone (default, https://sharepoint.domain.com). We set it up so that internal and external users both use the same URL; the drawback is that I have to set up all users in Active Directory now. I would like to use FBA on this zone...I'm hoping internal users will still use AD, and external users would now be set up in the FBA database. It looks like I can convert to claims based auth:
$WebAppName = "http://<yourWebAppUrl>"
$wa = get-SPWebApplication $WebAppName
$wa.UseClaimsAuthentication = $true
$wa.Update()
What is the next step though? Installing and configuring the FBA Pack? Any help or guidance is appreciated! Thanks!
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After converting to claims based, configure FBA in SharePoint:

http://donalconlon.wordpress.com/2010/02/23/configuring-forms-base-authentication-for-sharepoint-2010-using-iis7/

Then deploy the FBA Pack:
https://sharepoint2010fba.codeplex.com/documentation
3
Thank you ccoulson, everything worked like a charm! I have one question though. After implementing FBA, when I add Active Directory users to a site it no longer pulls in thier Department/Title/etc. from AD. Is this a result of implementing FBA, or something else? Is there a way to fix it? It was nice when it pulled that data automatically because it saved the user from having to manually enter it (and possibly entering incorrect information). Thanks!
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I haven't worked with AD authentication all that much - just for authenticating users, I haven't worked with syncing AD fields with SharePoint before. If it used to work and now it doesn't, it's probably not likely FBA - as there's not really any connection point between FBA authentication and AD authentication. My guess would be it's the difference between straight windows authentication and claims based windows authentication - as they differ. I'd suggest setting up two test web applications: 1 windows authentication only and 1 claims based windows authentication only, and see if you notice the difference between the two setups.