My Connection Drops Continuously! Help!

Hi

My router is a D-link DI-624 with the lastest firmware 2.70. It was good when I just bought it and upgrade the firmware but like after 2 months I started seeing that everytime I open eMule, my connection drops and I have to unplug the power cord from the router and then plug it again.
Now another problem is that I keep my PC on the hold day from 11:00am to 11:00pm and in the day I lost connection for like 5 times. What happens is that Im connected and like every hour the ballon pop ups and says No wireless connection and the little computer in the taskbar becomes a computer with an X. But after 8 to 10 seconds, I get internet back and connection and everything. But the problem is that I dont like my internet to drop every hour for 10 seconds!. and I want to use eMule too!
My router is the last revision C3 and my wireless card too is revision B3 DWL-G520.

Any ideas?

well the only wireless thing here in my room is my cordless logitech mx1000 mouse. nothing else

Well everytime my card runs for a scan, it only finds my router.
Also, there is a computer with a PCMCIA card but my dad only uses it like once or twice a week and everytime he connects to the internet my connection drops. But I dont worry about that because is only once a week he uses the laptop

And as I told you there are no other routers in my zone. Only one but it appears like once every 3 days and is very very low so it looks like is kinda far.

Regards

PD: I just downloaded the last drivers for my DWL-G520 from the D-link site im waiting to see if I get any problems I wont try with eMule right now I will just wait until I go to sleep to see if connection drops again.

Well yesterday at like 9:00pm after installing the new drivers from D-link I had no problems until 12:30am.
Now I have woke up at 11:30am and until now Im having no problems.

Ill be careful to any problems and then post them here anyways thx for your help guys