Well, thanks LOTR, that's what I call comprehensive
I've changed my LW setting (as well as my Firewall) to a port in the higher range quite recently with some instant improvement in download speed. However, I did not create a static IP. Would have this been necessary? I'm actually not sure whether I have a dynamic IP (but I almost suspect, since the reason for dynamic IP's most likely lies in some sort of cost efficiency, which is a big "YES'YES" here in Thailand).
Would you mind telling me whether you use UPnP or static ip and could recommend it to me? (Any additional information necessary for making such a recommondation can be instantaniously provided )

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"Never Argue With An Idiot. They Will Drag You Down To Their Level, Then Beat You With Experience"

My model of router requires manual port forwarding so thus I am required to use a static ip. My router doesn't have UPnP abilities.

If you're simply changing port setting within LW to connect through then a static ip shouldn't be necessary.

Not unless you do manual port forwarding is a static ip necessary. And it must be done before you forward a port, else it wouldn't work & you'd need to repeat the procedure.

Well, I've got "Manual Port Forward" check in my LW configuration with the listen port 64049, not UPnP.
From what I understand, I should exit LW completely, create a static IP and then re-open LW, or did I miss the point??

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"Never Argue With An Idiot. They Will Drag You Down To Their Level, Then Beat You With Experience"

You do that within LW "if" you have manually forwarded a port on your device. As suggested, to forward your device you need to set up a static ip 1st. I left a link for it on the previous page. There's also a link at the top of the link page about how to set up a static ip.

However if you can't do it, then you can always try experimenting around with the settings in LW.

Having read all your posts so far and tried every possible hint (okay, I'm exaggerating ), I've left the one with the static IP. But now I'm stuck with the following:
After reaching the login page of my ISP as described (except that the prompting box looks completely different then the one shown in the PortForwarding description; its a blank login dialog on a blank white webpage with this address: http://202.69.137.138/WebApp/Login/WebLogin.html), I typed in the username and password as provided by my ISP for my internet connection. After clicking on "login", nothing happens. The page loading indicator in the bottom right corner of my FF browser flickers for a second and that's it. I'm still at the login screen.
Any idea what I'm doing wrong??

__________________

"Never Argue With An Idiot. They Will Drag You Down To Their Level, Then Beat You With Experience"

Possibly incorrect pass. Check with your isp for the correct way of logging in or use the default as suggested on the Portforward site.
Your ISP login & router login will not necessarily be the same. There is probably a default login for it. I have mine bookmarked via my browser for auto-login so I can't remember much about it but I probably have a note about it somewhere both on the computer & hard-copy. If you've never set it for yourself, then there will be a default log in most likely.

Depending on the device, you can reset the login. You basically reset the device which kills any memory of settings within it.