Boot linux from a rescue cd. install lilo/grub, configure it, and install it on your boot parition.
lilo and grub are both capable of loading the linux kernel into the memory. Loading Linux is all about getting the kernel into the main memory, and execute it.
Maybe you can load the linux kernel with loadlin.exe too
If you have another boot manager, you can point it to your Linux parition, but that will cause lilo/grub to run. (and not your linux kernel)