Here's one web site that might be what you are looking for.
http://aprs.fi/?
There's a 'catch' though, for your APRS beacon to show up, you first have to have an APRS beacon running on 144.390 Mhz. Without that, there's nothing to 'show up'. Also be aware that since this involves the internet, the results are not going to be 'real time' very often, if ever. The 'lag' time can vary from just a few seconds to a few days.
Then there's always the 'real time' way of doing it which means getting the information from your radio, then sending it to a computer to display it. That radio typically is a transceiver which will be doing both beaconing and receiving broadcast information. Or, it can be just a receiver (scanner?) to do the displaying. Naturally, that means that the area covered by that receiver is going to determine 'how much' it will 'hear' to display. That can also include any relayed information which typically means more than you'd expect. 'Filtering', usually by distance from you, is one way of 'un-complicating' it a bit. It also means you will have to have the appropriate software to do all that displaying (and gets into how 'simple/cheap' all that is, and there's a -huge- variation in that!).
I think a good thing to do is find an APRS forum and see what/how other people do all that. I know there is at least one on 'Yahoo!', and who knows where else.
APRS is just a variation of packet mode. If you can do packet on VHF, you can reconfigure for VHF APRS. I figure you can do the same thing on HF, I'm just not aware of the 'how' of it, or if it's being done at all. It's certainly possible though.
Oh you will have so much fun! Which also means that for the first little while, you will be lost'er than a ball in high weeds!
- 'Doc