FalseDawn - 4:23 pm on Nov 9, 2005 (gmt 0)

"1000-2000+ extremely active users(like all of them posting and refreshing constantly for an afternoon, all at the same time). "

Sorry to say, but this kind of traffic is going to need something a LOT more substantial than a shared server.

You're looking at (at least) a dedicated box with dual processor and 2GB Ram, and preferably fast SCSI disks in RAID.