Calling ASM with C

[AlgorithmX2]

Hi its been a while sence I was last here but I've resently come across a problem when trying to call a asm function from my c code, basically The prototype for it is

word being an unsigned short, and byte being an unsigned char
extern void PlotPixel( word x, word y, byte c);

All my c code does so far is change the vid mode by calling

extern void ChangeVidMode(void);
which works

and proceeds to attempt to plot 640 x 480 worth of pixels
using PlotPixel(x,y,3);

then it loops, the problem has to be my asm code i tried to work though it based on the code the c compiler gave me and I ended up with this...

_PlotPixel:
enter 0, 0

mov ecx, dword[bp+8]
mov edx, dword[bp+12]

mov ah, 0Ch
mov al, 0x3

mov bh, 0h

int 10h

leave
ret

ps, I know im ignoreing the third arg thats cause its gonna be the color, but I can't even get the position to work right so I have been working with that pre-set

Needless to say I need some help here, im totally lost as to why I am only getting a 10 to 20 pixel horizontal line about 4 pixels down on the screen.

any help would be most appreciated, ive spent a few hours trying to get this to work and so far I have had no luck.

[AlgorithmX2]

It seems that either I was doing everything fine, or its a strange question but in any case I dont need the answer anymore, I switched my development tools to turbo c + tasm so I am just going to use all c + inline asm for my project, I was using nasm and linking with my c objs