Regex for default string splitting, multiple delimiters

I need to split a string using Regex (using VB.net) and:

• Store the separator character in parts
• Divide before parts.

So far I have:

Regex.Split(MyString, "(?<=[<@])")

This splitting into my two delimiters (@ and <) is fine, but I'm getting the @ or <character in the wrong part, so I need to split one step after each section we're currently getting ...

that is, it is & lt; is> a @string

currently divided into:

• is> a @
• line

But I want:

• this
• <is> a
• @string

Any help is greatly appreciated! Regex puzzles me!