Unfortunately, Pacific/888 block certain types of traffic that helps with diagnostics but we can still do some stuff.
Click Start > Run > type "cmd" > click OK.
In the black DOS box, type "tracert 195.244.211.205". That's the IP address of their poker server. You should see something like this:
Tracing route to 195.244.211.205 over a maximum of 30 hops
1 1 ms 1 ms 1 ms 172.24.0.1
2 36 ms 35 ms 40 ms dr10.thlon.ov.easynet.net [89.200.128.194]
3 41 ms 40 ms 39 ms 5acf0008.bb.sky.com [90.207.238.8]
4 54 ms 41 ms 40 ms 64.209.108.250
5 * 37 ms 39 ms 64.209.108.249
6 45 ms 41 ms 41 ms cwde-1.ar4.LON3.gblx.net [64.215.195.34]
7 41 ms 41 ms 43 ms xe-4-0-0.xcr1.lnd.cw.net [195.2.25.30]
8 66 ms 83 ms 86 ms ge-5-0-0.dcr1.lnd.cw.net [195.2.25.2]
9 59 ms 49 ms 35 ms so-0-0-0-zcr1.lnt.cw.net [166.63.163.222]
10 41 ms 39 ms 45 ms so-7-0-0-zcr2.lnt.cw.net [166.63.222.42]
11 76 ms 77 ms 73 ms gibtel-gw.lnt.cw.net [166.63.222.166]
12 83 ms 73 ms 72 ms rtcch01-gi9-2.gibtelecom.net [212.120.252.105]
13 76 ms 75 ms 76 ms rtdep01-ten1-0-1.gibtelecom.net [212.120.252.26]
14 67 ms 73 ms 73 ms rtacs03-gi0-0-0-cs1.gibtelecom.net [212.120.233.110]
15 * * * Request timed out.
16 * * * Request timed out.
Step 14 (in my case) is when we reach their ISP - Gibraltar Telecom - and we come up against their block.
Take a note of the IP address of the last stage you reach - i.e. 212.120.233.110 in my case.
In the same DOS box type "ipconfig". Take a note of the IP address of your default gateway.
Now, while you're playing on Pacific open a DOS box in the same way and type "ping
<the IP address of your default gateway> -n 3600" e.g. it'll be something like "ping 192.168.0.1 -n 3600".
In another DOS box and when you get disconnected, type "tracert <the last IP address in Gibraltar you reached previously>".
If the pings to your local gateway address stop when you get a disconnection, your problem is between you and your router.
If the pings carry on but the tracert to Gibraltar stop short of there (e.g. "Request timed out"), then the problem is somewhere between your ISP and Gibraltar.
If the pings carry on and the tracert reaches Gib OK, then it's looking pretty good that the problem is with Pacific and/or their ISP.
HTH.