You can download my minimal superfast configuration for 2.6.18 OpenVZ Kernel.
Download TAR GZIP: .config
* no modules
* Athlon XP
* VIA PATA / SATA
* without quota support
* only important things
* IPv6 support
Switch-on/off anything you need by yourself ;-)

“OpenVZ is an Operating System-level server virtualization solution, built on Linux. OpenVZ creates isolated, secure virtual environments — VEs (otherwise known as virtual private servers, or VPSs) on a single physical server enabling better server utilization and ensuring that applications do not conflict.”