Help With CB Radio Alignment & Tuning

I'm wanting to tune and align my own CB Radio but have found that some expensive equipment is required. However, it looks as though it may now be possible using a computer and Oscilloscope and Signal Generator software downloaded from the net. My problem is I have never used such equipment let alone connect it to a computer then use it. I see that cheap Signal Generators etc are available on the net but am not sure which one would suit 27mhz.. Looking at making my own where possible but admit I'm fairly new to electronics etc. For a better idea of what I am wanting to do please check out this link
I'd appreciate any help or advice re this.