I have installed a remote logger. They can be set up to either e-mail the log when it reaches a predetermined size or sent over the net to another computer. The trial versions will say so when you reboot the machine, it will either tell you the ip addy or email addy where the file is sent. The bought and paid for version will not, it is totally stealth. You can also download keystroke logger killer applications from the same site in where you down load the key logger. There are several ways to check for connections but you must be geek enough to be able to understand the out put that you will be seeing. In the CMD prompt you could use the Netstat command Netstat -a -n and see what comes up, but, you must be able to understand what it is you are looking for.
NETSTAT [-a] [-e] [-n] [-s] [-p proto] [-r] [interval]
-a Displays all connections and listening ports.
-e Displays Ethernet statistics. This may be combined with the -s
option.
-n Displays addresses and port numbers in numerical form.
-p proto Shows connections for the protocol specified by proto; proto
may be TCP or UDP. If used with the -s option to display
per-protocol statistics, proto may be TCP, UDP, or IP.
-r Displays the routing table.
-s Displays per-protocol statistics. By default, statistics are
shown for TCP, UDP and IP; the -p option may be used to specify
a subset of the default.
interval Redisplays selected statistics, pausing interval seconds
between each display. Press CTRL+C to stop redisplaying
statistics. If omitted, netstat will print the current
configuration information once.
or if you have a firewall you can look at it's logs for connections. But Like I said you must be geek enough to understand the readout. I would suggest the key logger killer app go to the link below and let it do it's thang! I do not know your level of computer'eez so I won't try to walk you through some of the common ways to manually find and destroy a key logger. Good Luck, go to the site below and have you puter scanned.