I have got an asus wireless router wl 500w . I can only get local acces, and sometimes connection to the internet for aout 10 seks, and then theres no interne again

Make sure the wireless is enabled and the correct configuration is entered in your laptop.

check the setting of the wireless

For that Connect your router to computer with ethernet cable then you can access it with following default link.
http://192.168.0.1
or
http://192.168.1.1

If you are not able to access it with above ip then check your computers ip address gateway ip is your router ip try with it
Still same then you need to reset router for access it with above default ip.
For that press RESET button it is in back side of router press it for 10 seconds then try with above ip..
Then it ask for user name and password.
Type user as "admin" and password as "admin" or "password" or blank.
Then you can see configuration page of router.
Click on WAN settings and set those settings as your internet service provider settings.
Enable DHCP if you want to get ip from router.
Click on wireless settings enable wireless then enable WEP Security then add WEP code .It is your password to connect wi fi.Then save settings and restart router.
Then you can connect your wi fi network with that code.
Let me know if you need further assistance.
Thanks for using FixYa.

You can download the software here on link below.

http://www.findmysoft.com/drivers/ASUS-WL-500W-Wireless-Router-Utility-3-1-8-0--driver.html

reset the router..

your sub net mask is wrong you have to put 255.255.255.0 and make 192.168.1.1 to modem and 192.168.2.1 to router

This will give you a "Double NAT" setup. Meaning, Your D-Link router is connected to the external internet address assigned to you by your internet service provider. More than likely this is a DHCP address you do not control. Your D-Link router is then translating the address to the 192.168.1.x network. This is the first NAT translation. You are then connecting the ASUS router to DLINK, causing a second NAT translation. (Internet ADSL --> D-Link WAN Port --> D-Link Lan Port --> ASUS WAN Port --> ASUS Lan Port to computer/server/etc. ) If both of your routers are giving out DHCP addresses, then this is all that is required.

I had the same problem. The problem is interferance from other devices. Solution, Change the channel from auto to a fixed one. That worked for me. No more droped connections, and a very strong signal now.

Fixed it, remember to install the vista driver for your harddisk, then select the port of the ip to the wireless devide, then it should work, you can check in the wireless web setup that the printer is located, under System.

how your ADSL internet service provider, lock connection from any his machine ? Or your ISP dont provider for IP ADDRESS for DHCP or your ASUS dont set up get IP from DHCP.

Check this information.

Good Luck!