Vista & McAfee. Only 1 Bar

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Hi,

I downloaded LW Pro, it starts fine, i initally got a couple of bars..then only one, obviously a nightmare. Any help/advice that you can give me would be savage.

1.I'm running windows vistahome basic
2.McAfee and Windows firewall
3.1gig Ram
4.16 gig hard drive space, total 80
5. Broadband connection
6.Next Net, Wireless Inc(Serial No. etc lost!)
7.connecting from my house
8.LW 4.14.10 pro, Java 1.6.0-oem,
9. ISP Clearwire Ireland
10.My test worked....woohoo
11.Not sharing
12.I'm a total newbie
13.Brick in front of globe
14.I honestly don't have a clue , i tried to set up the port number that i got from LW Tools>Options>Advanced>Firewall conig>15596
15.Running McAfee....and windows firewall is on too. Not sure if I should turn it off...i'm confused!
16.Ireland

My heart is broken

Gary