File Sharing With Ext4 Partition

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http://askubuntu.com – I tried googling this problem but I haven't received a definitive answer. This is my situation, I have a 3TB external hard drive connected to my server via esata. I plan on sharing this drive over a network using samba. The hard drive is formatted in ext4 but I need a windows machine to be able to read and write to it over the network to access files, make backups and general storage. I chose ext4 because I heard ntfs-3g has a ton of latency when accessing drives and I like how I can move files while I'm using them. Is this possible or will I have to install some program to at least read (HowTos)