I'm looking to get a cheap VPS at RamNode for $3.50. However, I'm having doubts that I may not be able to install HitLeap. 1. What OS should I choose so I can install HitLeap? CentOS, Ubuntu, etc. (I'm looking for Windows but I can't find one in the $3.50 plan in RamNode) 2. Is there a free alternative for this? Thanks!