Well, I just want to think about asking regarding to the both of the Handhelds PSP & Nintendo DS. I have the Wireless Router called Linksys WRT54Gv7. Now, I just want to ask if the PSP is compatible in this wireless router to play Wifi Battle. Another one is, what is the suggested wifi game to play to seek opponent?

I had a Linksys router (don't remeber hich model), it worked with my PSP. SOCOM Fireteam Bravo is the only game for PSP that you actually play over the internet.

Wow, another first person shooter, huh? Very well, I'll try that game once I have the PSP.

Well, I'm not sure about said router (they have one here at my workplace, but I primarily use an SMC for my DS). The one thing you should know is that the DS lacks WPA support, so you have to turn off WPA to get it to work.

As for online gaming, a large amount of NDS games in the market support WiFi gaming. I myself regularly play Tetris DS online.

SOCOM Fireteam Bravo is the only game for PSP that you actually play over the internet.

Incorrect.

Metal Gear Solid: Portable Ops.

Very fun; for about 2 weeks.

Anyway, what is also the suggested fighting game in PSP for Online Game? Again, thanks for this MGS.

Tekken?

My cousin has a PSP, and he primarily plays Tekken on it.

I honestly don't know any PSP games that you can play over the internet; there is a way though. Although I'm not entirely sure how it works, but you'll need a computer with wireless capabilities and download the program called xbconnect. You can download it at xbconnect.com. You can use it to play against people all over the world. It works for XBOX and the 360. You'll need a router and you'll need to plug in your system and the computer to it (don't forget to run the program on the computer).

Doubt that works to the extent he is looking for.