connection probs

[r j]

Hi there.Have just downloaded limewire.everything seemed fine good connections speed ect.then when i switched off comp and re-connected later it kept saying connecting to network but never did.I tried a few ideas but to no avail.I then removed it and downloaded again and yes fine worked great until i switched off again.Im working on xp home addition and am connected with talktalk smartax882v2 modem ive enabled the comp and modem for upnp connections and windowsxp sp2 firewall is showing limewire ok.does anybody have any ideas could it be static ip address problem and port forwarding as i have all ready tried this when i had shareaza and it did not make any difference to performance.but with limewire i get no connection when i switch back on.shareaza did work but very porly.any help much appreciated.