Hi,
You can't hide that text in a regular way.
But you can hide and show only the LOGO by using CSS.
If you are able to find the "css selector" (
www.w3schools.com/CSSref/css_selectors.asp) of that text and create a CSS rule like this:
.CSS_SELECTOR_OF_THE_TEXT_TO_HIDE {
display:none;
}
then the TEXT of "PayPal" will be gone and only the Image will be visible. This is a 100% custom modification and unfortunately we don't provide free support or step-by-step instructions for custom coding modifications.
You may purchase premium support:
www.flexiblewebdesign.com/premium-support and let us take care this modification for you directly on your website though.
You can also do this modification through Virtuemart Core files (hard coding), but it would be "Virtuemart Hack" and i won't recommend you to attempt to do it. CSS is the much better method to hide that text.
Regards,
Support