Greetings.
Just purchased a DS-2CD2432F-IW 2.8mm on Friday and currently awaiting its arrival. I'm going to be attempting the same as yourself with SMB/CIFS with my server which runs Windows Home Server 2011 so will be watching this post with interest. I'll post in here with my foray into getting this cam to upload data via Windows shares.
Just for info and in the interests of knowledge sharing, have you tried enabling NFS on any Windows O/Ss? Might be another option for you. I've had NFS shares working and accessible to other platforms from Windows before but as I'm a cam virgin, not tried access from such but thought it was worth mentioning.
I will be trying both methods to gauge success/reliability once the 2432 arrives so will let you know how I get on if you're interested.
If you've not done NFS shares from Windows before, the following I just found covers it in a nutshell to save me writing out the basic method of installing and enabling the services.
http://www.mediasmartserver.net/2011/12/23/guide-setting-up-nfs-in-whs-2011/
Pretty much all Windows desktop and server O/Ss that I've come across to press utilise the same methodology as in the link above but I've not played with Windows 8 yet so it might be different, if so, my apologies but thought it worth contributing the above for anyone else who might make use of it while searching for such info.
Cheers,
Camwhore.