What program are you using to write your text? The tab key works with most text editors that I know of.
If you're talking about indenting on IHUB you'll have to use fixed fonts. To use fixed fonts you have to surround the part you want fixed with [ pre ]whatever you want typed[ /pre ]
Leave out the spaces before and after "pre" on the front and "/pre" on the end. I included them to get it to get it to show in this post. Below is an example. The first line is typed normally. The second line is what you get if you hit the spacebar 4 times and then typed "indented" (surrounded by the brackets and pre)