Have network, can see other PC's but no access! O.S Windows Vista Home Premium

I have for years successfully used a home LAN on a Belkin router. Now changed ISP (SKY broadband) and using their own Sagem F@ST router _ Terms & Conditions don't allow use of Belkin!!!

Hi Guys

Some help would be much appreciated indeed........

The Setup:
Computer 1 - connected to modem/router via USB - no probs connecting to Internet.

Computer 2 - connected to modem/router via Ethernet - no probs connecting to internet.

Computer 3 - connected to Computer 2 via wireless card (same manufacturer wireless card in both C2 and C3).

Problem:

C2 is designated as the HOST
C3 is designated as a CLIENT

C2 connects to C3 and file sharing is working - but no matter what I try I cannot get C3 to get "through" (for lack of a better word) C2 and onto the internet.

Hello everyone! :)
I recently set up a Windows-based home video surveillance system and have it working perfectly (so far). I have an option in the software to send images to a free remote FTP server, just in case the video server itself was ever stolen the last images to arrive at the FTP server may help identify the offender. However, with the video server constantly sending images to the FTP server, eventually the alloted 250MB of disk space quickly runs out and no new images can be received.

I have an external hard drive on a desktop computer on my home network I use for backups.
I used to have it set up as a mapped network drive on a laptop so I could backup the laptop to it. I had to disconnect it as a network drive and now cannot set it up again.
In View Workgroup Computers I can see the desktop computer, but cannot open it. Error says it not accessible.

When I go to try and map the drive as a network drive and browse to find it, I find the desktop but not the attached external drive.

I’ve seen this question asked a few times, but don’t recall ever seeing a definite answer. Is it safe to leave your computer with the web browser open, or can hackers use this open browser to gain control over your computer while you’re not looking? Or does the fact that you have always-on broadband mean that they can get to your computer anytime it’s switched on? Is a computer in hibernation the same as a switched-on computer?

After logging on as admin, I'd like the pc's to revert to the main users name at login (rather than admin showing up). How can I accomplish this?

For the server on which this web site runs, I used the domain registrar's (GoDaddy in this case) DNS servers. However, this caused a few problems, so I looked for another solution.

1. I couldn't convince GoDaddy's system to accept my own DNS server as the primary server. Since the Plesk-controlled DNS server on this web and mail server gets most data automatically from Plesk (domainkey entries, to give just one example), I really wanted this to be the primary DNS server.
2. GoDaddy doesn't quite give me full control over the DNS entries. My own server is more flexible.

SPF (Sender Policy Framework or Sender Permitted From), Domainkeys, and DKIM (DomainKeys Identified Mail) are methods to authenticate mail senders and detect incoming mail that was not sent by whom it says it was sent. This can help to fight spam. For example, if spammers can no longer hide their domain identity by faking their sending domains, they could effectively be blacklisted.

Hi,
I used my laptop this afternoon when for some reason the internet stopped working. I have WIndows XP SP2 on my machine and a connection through a WAN miniport (PPPOE).

I tested the connection with the same cable and on an other machine and that was able to connect. So the problem is definitly within my laptop but I couldnt figure out what it is.

I switched off all the virus protection and firewall that might could block the connection, however nothing has changed. I re-installed the connection and checked & cleared the machine for spywares but that didnt help either.