Please Help! Who Knows about DCA?

Hi all,

I'm planning to put my regular savings into dollar cost averaging type of investing.

My plan is to save 20% of my income (fortnightly), have it automatically debited into an investment account of some sort and then invest what I save into indices or something and have that automated so I don't have to think about it and get on with my other plans in life.

I've been having difficulty finding somewhere I can set that up.

I set up a westpac investment fund only to find out that they don't have the facility for what I'm trying to do and I was in the process of filling out a vanguard application form until I got to the page about selecting one of their investment selections that stated I needed a $5,000 minimum.

Who has the facility to allow me to do what I'm trying to do?
Is what I'm trying to do even possible?
And I have a low income, therefore I can't save very large chunks of money. Is this something that's even viable for me or is this out of my league?

Please help me get the right information. The reason I like the idea of investing my savings as soon as possible is because it takes away the possibility of me drawing back from my savings which is a recurring issue for me. Once its tied up in an investment, then I can't touch or access it so easily.

Help me guys. Who has the facility that will allow me to automate my savings into a dollar cost averaging investment strategy?

Clinton