wrong on several counts... (Score 3, Informative)

Windows clustering allows for Active/Active clusters, so you CAN run the same service on two cluster nodes at the same time (with the exception of Exchange).

Setting up two servers to host VMWare guests and copying is not a good idea either - the HA tools for VMWare are expensive, and totally unneccessary for the proposed deployment. Without these HA tools, he would have to down his primary guest every time he wanted to make a snapshot.

We're talking about a very simple deployment here - HTTP and FTP. You don't even need clustering or a dedicated load balancer - instead, try using round-robin DNS records to do some simple load balancing, and then use a shared storage area as your FTP root (could be a DFS share for Windows or an NFS mount in Linux). This would give you a solid two-server solution that works well for what you're trying to accomplish, and adding servers would be trivial (just deploy more nodes, and add DNS records to the list).

If it grows much larger than 2 nodes, you might consider an inexpensive load-balancer; Barracuda sells one that works well and will detect a downed node.

Clustering for this job is totally unnecessary though. You're wasting your time by looking into it.