iphone post multipart

I am trying to upload image and other details using the multipart post method. I went through the following link

http://lists.apple.com/archives/web-dev/2007/Dec/msg00017.html

But I am just not able to tweak it to how I want it as I am not able to under stand the conten开发者_如何学Got-disposition and things like that. My code for sending the other details are here below.

postString = [NSString stringWithFormat:@"u=username&p=pass&color=red&date=12];

I need to send this as well as an image from the gallery. I am using ALAsset to access the image. PLease help. I am a new bee in iphone

You can use ASIHTTPRequest to upload file with multipart. It's pretty easy.