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We propose to observe 4 CH stars. These are carbon-enhanced Population II giant stars nearly all of which have white dwarf binaries comma which are responsible for their unusual abundances. Based on their orbital parameters comma distances comma and stellar parameters comma we have identified the best candidates for showing X-ray emission. None of these stars has yet been observed by anything more sensitive than ROSAT comma but we anticipate that they should be detectable in a modest amount of XMM time. Discovering X-ray emission will open up a new understanding of the stellar winds from these stars comma and of the otherwise hard-to-measure masses of their white dwarfs.