UV-82 radios are programmed using CHIRP software. Chirp does not work on XP but it does work on the latest version of Linux. Try a download from chirp.danplanet and see if it works. If not, you will need to borrow a laptop.
You will need a programming cable. PLEASE don’t buy a cheap one. It will drive you crazy with frustration. 99.9% of all programming problems that users are having where the computer does not read or write to the radio is because people buy the cheap cable with the cloned prolific chip and need to downgrade drivers. Get a cable with a genuine FTDI chip. Trust me. You will thank me. (Our forum hosts sell great FTDI cables.)
Next step is that you need the list of frequencies. Those you should have already, but if you don’t, you can borrow a Baofeng from another park and use that to read their radio, then enter the frequencies on your own radio model.
In CHIRP, use the UV-82 model if your radios are the older model UV-82 or the UV-82C. If you got the UV-82HP, use that model in CHIRP. (They have two different models because the HP has different power settings from the regular UV-82.)
Ignore anyone who recommends or tries to sell you an “upgrade” antenna. I have tested nearly everything on the market, and there is little to be gained (and sometimes, lots to be lost) with any antenna other than the factory one. Again, you will thank me. (I have the advantage of dozens of UV-82C radios at my disposal, so I can easily test them back-to-back in real world conditions.)
The UV-82 is pretty good as far as range and clarity is concerned. Like most cheap Chinese radios, they desense easily and are not very selective in their receiving, so if they get too close to each other, they won’t talk to each other. If you seem to lose a signal when a few feet away, move farther apart.
If you are disappointed at the quality of the UV-82 (and they are one of the best of the Baofeng line) then I suggest looking at Wouxun. They are much higher cost, but higher quality. The UV6D works with CHIRP and is licenced for Part 90. The newer UV7D (that I love) is also a Part 90 (business band) radio, but only works with Wouxun software. (I had no problem programming a UV7D from buytwowayradios for business bands.) Both are rated for basic water resistance too; a plus when outdoors.
The TYT radios are also nice, and higher quality than Baofeng. The new TYT TH-UV88 seems like a good substitute for the UV-82, BUT (and this is a big but) it is not licenced for Part 90. CHIRP supports the UV88, but there is no guarantee you can “open up” the frequency range to include the business band you need. Most Ham radios (even many of the Part 90 radios) now come from China “locked” to Ham bands only in firmware, and are difficult and sometimes impossible to “unlock.” Personally, I would stick to radios listed as Part 90 approved, and the vendor can guarantee they are open to the full spectrum of VHF, or can be “unlocked” to the full spectrum. (Your radio licence is in the 150MHz band, but the Ham band stops at 148MHz.)
One other approach is to look at DMR radios such as the TYT MD-UV380 or the VHF version of the TYT MD-390. They are Part 90 digital radios that can also be programmed for analog frequencies. (Which is what you will need.) The MD-390 is particularly attractive because it is water and weather resistant (that most other handhelds are not.) Why digital when you are only using them on analog channels? Good quality; good sound in analog, and easy to program (once you stay away from the digital frequencies) plus they come with the cable. The downside is that you will need a Windows 8 or 10 laptop.
Bottom line. Get an FTDI chip programming cable; borrow a laptop; borrow another Park’s Baofeng to read the frequencies if you don’t have them already, and see how you like the UV-82. For the price, they are hard to beat. If you eventually want better quality and more weather resistance, look at Wouxun or TYT.