Having wireless card issues

[SleepWalkerX]

I have a Trendnet TEW-423PI which is their pci 802.11g card. I'm trying to connect to my WRT54G router with DD-WRT v23 final firmware. And I'm running WinXP.

The problem is that I can sometimes connect to the actual signal, but when I look at my transmitting and receiving packets it shows that I am able to receive packets just fine, but not transmit them. Sometimes I start moving/twitching my antenna and my transmitting packets jump by a few. It doesn't matter where my location is to the router. I've even set my router's values to default.

Is it a problem with my wireless card drivers? My router? Or maybe my wireless card's hardware?

 

[SleepWalkerX]

Ok I figured out it was the antenna on the card. When I removed it I get a horrible signal strength and link quality, but I can still transmit and receive packets just fine. Maybe I might buy a better antenna, but I've tried a different antenna I had lying around and I got the same result.