Only if the content of your web page is of definite direct interest to PuTTY users. If your content is unrelated, or only tangentially related, to PuTTY, then the link would simply be advertising for you.
This is still true even if you offer to pay us. We aren't interested in trading links for money, and we certainly aren't interested in trading links for other links. If we don't want to link to you for free, then we probably won't want to link to you at all.
If you have software based on PuTTY, or specifically designed to interoperate with PuTTY, or in some other way of genuine interest to PuTTY users, then we will probably be happy to add a link to you on our Links page. And if you're running a particularly valuable mirror of the PuTTY web site, we might be interested in linking to you from our Mirrors page.