Need a datacable for it. I got a samsung OEM from ebay for like 6 bucks or so.
1. Enable DUN Mode, Push menu then 9 then # enter 333333 then go down to DUN Mode and enable
2. Download the samsung pc studio (google samsung pc studio)
3. Install PC studio and then plug in phone, it will locate the drivers that you need to use, the program it's self won't work with windows, but for this we just need the drivers.
4. Plug in phone and goto your networking icon in the control panel.
5. Make new dialup connection. Ph # is #777 l: (yourphonenuraber)@mycricket.com pw: cricket
6. Change your proxy settings to wap.mycricket.com p: 8080. What I did here was go back into the control panel, and go under internet properties, and under dial-up and Virtual Private network settings, and told windows that whenever I connected with this connection to use that proxy server so I wouldn't have to manually set it in IE and firefox everytime. Your dial up connection that you made should be in there, so it is just a matter of clicking on it, then clicking on settings and in the proxy server box, put a check into it, and enter the wap.mycricket.com and port 8080. As far has I know here port 443 should go through also, soo you can use secure sites also.
That's it. Beyond that you can start to get into some fancy networking and go through port 443 to do whatever you need (ssh, ftp, etc) but that is a whole another thread all together.
I did this with my jetset, and it worked in evdo mode just fine, but I am guessing that the messager is basically the same software, should work the same, just at 1x not evdo.