Free program like ICQ that allows chat between PC & phone-without-wifi

[Sebastian42]

The phone is wifi-capable, but the the wifi is not always available. Is there a free program, as ICQ used to be, that allows a plain-text SMS sent from the phone, to be received by a PC (running Win7) at the time when there is no wifi for the phone ?

[Geek-9pm]

I don't know.
But you might think about using twitter.
Twitter via SMS FAQs

How do I use Twitter on my phone?

If you already have a Twitter account, you can access it from your phone using SMS or Twitter's mobile website, mobile.twitter.com. You can also create a new Twitter account via SMS by sending the word START to your Twitter shortcode.

Does it cost money? Will fees be added to my phone bill?

Twitter is a free service; we do not charge you to use it, even via SMS. However, if you use Twitter via text message on your phone, your mobile carrier may charge you for those messages according to your service plan. Read more here.

Would that work?